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At least 1,315 records · Page 73
All sourcesNASA NTRSDOE OSTI
DOE OSTI2022

Novel internal measurements of ion cyclotron frequency range fast-ion driven modes

Abstract Novel internal measurements and analysis of ion cyclotron frequency range fast-ion driven modes in DIII-D are presented. Observations, including internal density fluctuation ( n ~ ) measurements obtained via Doppler backscattering, are presented for modes at low harmonics of the ion cyclotron frequency localized in the edge. The measurements indicate that these waves, identified as coherent ion cyclotron emission (ICE), have high wave number, k ⊥ ρ fast ≳ 1, consistent with the cyclotron harmonic wave branch of the magnetoacoustic cyclotron instability, or electrostatic instability mechanisms. Measurements show extended spatial structure (at least ∼1/6 the minor radius). These edge ICE modes undergo amplitude modulation correlated with edge localized modes (ELM) that is qualitatively consistent with expectations for ELM-induced fast-ion transport.

70 PLASMA PHYSICS AND FUSION TECHNOLOGY↗
DOE OSTI2020

Materials Data on KEr3F10 by Materials Project

KEr3F10 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. K1+ is bonded to sixteen F1- atoms to form distorted edge-sharing KF16 tetrahedra. There are four shorter (2.77 Å) and twelve longer (3.21 Å) K–F bond lengths. Er3+ is bonded in a 8-coordinate geometry to eight F1- atoms. There are four shorter (2.20 Å) and four longer (2.36 Å) Er–F bond lengths. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a bent 150 degrees geometry to two equivalent K1+ and two equivalent Er3+ atoms. In the second F1- site, F1- is bonded to one K1+ and three equivalent Er3+ atoms to form a mixture of distorted corner and edge-sharing FKEr3 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KHo3F10 by Materials Project

KHo3F10 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. K1+ is bonded to sixteen F1- atoms to form distorted edge-sharing KF16 tetrahedra. There are four shorter (2.78 Å) and twelve longer (3.21 Å) K–F bond lengths. Ho3+ is bonded in a 8-coordinate geometry to eight F1- atoms. There are four shorter (2.20 Å) and four longer (2.36 Å) Ho–F bond lengths. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a bent 150 degrees geometry to two equivalent K1+ and two equivalent Ho3+ atoms. In the second F1- site, F1- is bonded to one K1+ and three equivalent Ho3+ atoms to form a mixture of distorted corner and edge-sharing FKHo3 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K4NaCl5 by Materials Project

K4NaCl5 is Caswellsilverite-like structured and crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded to six Cl1- atoms to form KCl6 octahedra that share corners with six KCl6 octahedra, edges with four equivalent NaCl6 octahedra, and edges with eight KCl6 octahedra. The corner-sharing octahedra tilt angles range from 0–7°. There are a spread of K–Cl bond distances ranging from 3.09–3.17 Å. In the second K1+ site, K1+ is bonded to six Cl1- atoms to form KCl6 octahedra that share corners with two equivalent NaCl6 octahedra, corners with four KCl6 octahedra, an edgeedge with one NaCl6 octahedra, and edges with eleven KCl6 octahedra. The corner-sharing octahedra tilt angles range from 0–5°. There are a spread of K–Cl bond distances ranging from 3.15–3.21 Å. Na1+ is bonded to six Cl1- atoms to form NaCl6 octahedra that share corners with two equivalent NaCl6 octahedra, corners with four equivalent KCl6 octahedra, edges with two equivalent NaCl6 octahedra, and edges with ten KCl6 octahedra. The corner-sharing octahedra tilt angles range from 0–5°. There are four shorter (2.95 Å) and two longer (3.15 Å) Na–Cl bond lengths. There are three inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded to six K1+ atoms to form a mixture of edge and corner-sharing ClK6 octahedra. The corner-sharing octahedra tilt angles range from 0–5°. In the second Cl1- site, Cl1- is bonded to four K1+ and two equivalent Na1+ atoms to form a mixture of edge and corner-sharing ClK4Na2 octahedra. The corner-sharing octahedra tilt angles range from 0–7°. In the third Cl1- site, Cl1- is bonded to four equivalent K1+ and two equivalent Na1+ atoms to form a mixture of edge and corner-sharing ClK4Na2 octahedra. The corner-sharing octahedra tilt angles range from 0–2°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KCdSb by Materials Project

KCdSb is Matlockite structured and crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. K1+ is bonded to five equivalent Sb3- atoms to form distorted KSb5 trigonal bipyramids that share corners with twelve equivalent CdSb4 tetrahedra, corners with four equivalent KSb5 trigonal bipyramids, edges with four equivalent CdSb4 tetrahedra, and edges with eight equivalent KSb5 trigonal bipyramids. There are four shorter (3.60 Å) and one longer (3.75 Å) K–Sb bond lengths. Cd2+ is bonded to four equivalent Sb3- atoms to form CdSb4 tetrahedra that share corners with four equivalent CdSb4 tetrahedra, corners with twelve equivalent KSb5 trigonal bipyramids, edges with four equivalent CdSb4 tetrahedra, and edges with four equivalent KSb5 trigonal bipyramids. All Cd–Sb bond lengths are 3.01 Å. Sb3- is bonded in a 9-coordinate geometry to five equivalent K1+ and four equivalent Cd2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KTiS2 by Materials Project

KTiS2 is Caswellsilverite-like structured and crystallizes in the trigonal R3m space group. The structure is three-dimensional. K1+ is bonded in a 6-coordinate geometry to six S2- atoms. There are three shorter (3.10 Å) and three longer (3.15 Å) K–S bond lengths. Ti3+ is bonded to six S2- atoms to form edge-sharing TiS6 octahedra. There are three shorter (2.51 Å) and three longer (2.52 Å) Ti–S bond lengths. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded to three equivalent K1+ and three equivalent Ti3+ atoms to form distorted edge-sharing SK3Ti3 octahedra. In the second S2- site, S2- is bonded in a 6-coordinate geometry to three equivalent K1+ and three equivalent Ti3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KMgSb by Materials Project

KMgSb is Matlockite structured and crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. K1+ is bonded to five equivalent Sb3- atoms to form distorted KSb5 trigonal bipyramids that share corners with twelve equivalent MgSb4 tetrahedra, corners with four equivalent KSb5 trigonal bipyramids, edges with four equivalent MgSb4 tetrahedra, and edges with eight equivalent KSb5 trigonal bipyramids. There are four shorter (3.65 Å) and one longer (3.75 Å) K–Sb bond lengths. Mg2+ is bonded to four equivalent Sb3- atoms to form MgSb4 tetrahedra that share corners with four equivalent MgSb4 tetrahedra, corners with twelve equivalent KSb5 trigonal bipyramids, edges with four equivalent MgSb4 tetrahedra, and edges with four equivalent KSb5 trigonal bipyramids. All Mg–Sb bond lengths are 2.95 Å. Sb3- is bonded in a 9-coordinate geometry to five equivalent K1+ and four equivalent Mg2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KCdAs by Materials Project

KCdAs is Matlockite structured and crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. K1+ is bonded to five equivalent As3- atoms to form distorted KAs5 trigonal bipyramids that share corners with twelve equivalent CdAs4 tetrahedra, corners with four equivalent KAs5 trigonal bipyramids, edges with four equivalent CdAs4 tetrahedra, and edges with eight equivalent KAs5 trigonal bipyramids. There are four shorter (3.47 Å) and one longer (3.56 Å) K–As bond lengths. Cd2+ is bonded to four equivalent As3- atoms to form CdAs4 tetrahedra that share corners with four equivalent CdAs4 tetrahedra, corners with twelve equivalent KAs5 trigonal bipyramids, edges with four equivalent CdAs4 tetrahedra, and edges with four equivalent KAs5 trigonal bipyramids. All Cd–As bond lengths are 2.85 Å. As3- is bonded in a 9-coordinate geometry to five equivalent K1+ and four equivalent Cd2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2In3AgSe6 by Materials Project

K2AgIn3Se6 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded to seven Se2- atoms to form distorted KSe7 pentagonal bipyramids that share corners with two equivalent KSe7 pentagonal bipyramids, corners with two equivalent AgSe4 tetrahedra, corners with six InSe4 tetrahedra, an edgeedge with one KSe7 pentagonal bipyramid, an edgeedge with one AgSe4 tetrahedra, edges with four InSe4 tetrahedra, and faces with two equivalent KSe7 pentagonal bipyramids. There are a spread of K–Se bond distances ranging from 3.41–3.77 Å. In the second K1+ site, K1+ is bonded to seven Se2- atoms to form distorted KSe7 pentagonal bipyramids that share corners with two equivalent KSe7 pentagonal bipyramids, corners with two equivalent AgSe4 tetrahedra, corners with six InSe4 tetrahedra, an edgeedge with one KSe7 pentagonal bipyramid, an edgeedge with one AgSe4 tetrahedra, edges with four InSe4 tetrahedra, and faces with two equivalent KSe7 pentagonal bipyramids. There are a spread of K–Se bond distances ranging from 3.40–3.77 Å. There are two inequivalent Ag1+ sites. In the first Ag1+ site, Ag1+ is bonded to four Se2- atoms to form AgSe4 tetrahedra that share corners with four equivalent KSe7 pentagonal bipyramids, corners with eight InSe4 tetrahedra, and edges with two equivalent KSe7 pentagonal bipyramids. There are two shorter (2.68 Å) and two longer (2.71 Å) Ag–Se bond lengths. In the second Ag1+ site, Ag1+ is bonded to four Se2- atoms to form AgSe4 tetrahedra that share corners with four equivalent KSe7 pentagonal bipyramids, corners with eight InSe4 tetrahedra, and edges with two equivalent KSe7 pentagonal bipyramids. There are two shorter (2.69 Å) and two longer (2.71 Å) Ag–Se bond lengths. There are three inequivalent In3+ sites. In the first In3+ site, In3+ is bonded to four Se2- atoms to form InSe4 tetrahedra that share corners with four KSe7 pentagonal bipyramids, corners with two AgSe4 tetrahedra, corners with four InSe4 tetrahedra, and edges with three KSe7 pentagonal bipyramids. There are two shorter (2.63 Å) and two longer (2.64 Å) In–Se bond lengths. In the second In3+ site, In3+ is bonded to four Se2- atoms to form InSe4 tetrahedra that share corners with four KSe7 pentagonal bipyramids, corners with two AgSe4 tetrahedra, corners with four InSe4 tetrahedra, and edges with three KSe7 pentagonal bipyramids. There are two shorter (2.63 Å) and two longer (2.64 Å) In–Se bond lengths. In the third In3+ site, In3+ is bonded to four Se2- atoms to form InSe4 tetrahedra that share corners with four KSe7 pentagonal bipyramids, corners with four AgSe4 tetrahedra, corners with four InSe4 tetrahedra, and edges with two KSe7 pentagonal bipyramids. There are two shorter (2.61 Å) and two longer (2.63 Å) In–Se bond lengths. There are six inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 5-coordinate geometry to two K1+, one Ag1+, and two In3+ atoms. In the second Se2- site, Se2- is bonded in a 5-coordinate geometry to two K1+, one Ag1+, and two In3+ atoms. In the third Se2- site, Se2- is bonded in a 5-coordinate geometry to three K1+ and two In3+ atoms. In the fourth Se2- site, Se2- is bonded in a 5-coordinate geometry to three K1+ and two In3+ atoms. In the fifth Se2- site, Se2- is bonded in a 5-coordinate geometry to two K1+, one Ag1+, and two In3+ atoms. In the sixth Se2- site, Se2- is bonded in a 5-coordinate geometry to two K1+, one Ag1+, and two In3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2AgBi by Materials Project

K2AgBi crystallizes in the orthorhombic C222_1 space group. The structure is three-dimensional. K is bonded in a 6-coordinate geometry to four equivalent Ag and four equivalent Bi atoms. There are a spread of K–Ag bond distances ranging from 3.86–4.10 Å. There are a spread of K–Bi bond distances ranging from 3.66–3.81 Å. Ag is bonded to eight equivalent K, two equivalent Ag, and two equivalent Bi atoms to form a mixture of distorted face, edge, and corner-sharing AgK8Ag2Bi2 cuboctahedra. Both Ag–Ag bond lengths are 3.24 Å. Both Ag–Bi bond lengths are 2.82 Å. Bi is bonded in a 10-coordinate geometry to eight equivalent K and two equivalent Ag atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K(InGa)2 by Materials Project

K(InGa)2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. K is bonded in a 8-coordinate geometry to eight equivalent In and eight equivalent Ga atoms. All K–In bond lengths are 3.80 Å. All K–Ga bond lengths are 3.63 Å. In is bonded to four equivalent K, four equivalent In, and four equivalent Ga atoms to form a mixture of distorted face, edge, and corner-sharing InK4In4Ga4 cuboctahedra. All In–In bond lengths are 3.39 Å. All In–Ga bond lengths are 2.91 Å. Ga is bonded in a 9-coordinate geometry to four equivalent K, four equivalent In, and one Ga atom. The Ga–Ga bond length is 2.58 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KTi5Se8 by Materials Project

KTi5Se8 is Orthorhombic Perovskite-like structured and crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. K1+ is bonded in a 10-coordinate geometry to ten Se2- atoms. There are a spread of K–Se bond distances ranging from 3.50–3.62 Å. There are three inequivalent Ti3+ sites. In the first Ti3+ site, Ti3+ is bonded to six Se2- atoms to form a mixture of edge and corner-sharing TiSe6 octahedra. The corner-sharing octahedral tilt angles are 49°. There are four shorter (2.58 Å) and two longer (2.61 Å) Ti–Se bond lengths. In the second Ti3+ site, Ti3+ is bonded to six Se2- atoms to form a mixture of face, edge, and corner-sharing TiSe6 octahedra. The corner-sharing octahedra tilt angles range from 48–53°. There are a spread of Ti–Se bond distances ranging from 2.51–2.72 Å. In the third Ti3+ site, Ti3+ is bonded to six Se2- atoms to form a mixture of face, edge, and corner-sharing TiSe6 octahedra. The corner-sharing octahedra tilt angles range from 48–53°. There are a spread of Ti–Se bond distances ranging from 2.52–2.67 Å. There are four inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a distorted rectangular see-saw-like geometry to one K1+ and four Ti3+ atoms. In the second Se2- site, Se2- is bonded in a 5-coordinate geometry to two equivalent K1+ and three Ti3+ atoms. In the third Se2- site, Se2- is bonded in a 5-coordinate geometry to two equivalent K1+ and three equivalent Ti3+ atoms. In the fourth Se2- site, Se2- is bonded to five Ti3+ atoms to form distorted edge-sharing SeTi5 trigonal bipyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs3K5Mo8(P2O11)4 by Materials Project

Cs3K5Mo8(P2O11)4 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are three inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 12-coordinate geometry to eleven O2- atoms. There are a spread of Cs–O bond distances ranging from 3.11–3.61 Å. In the second Cs1+ site, Cs1+ is bonded in a 12-coordinate geometry to twelve O2- atoms. There are a spread of Cs–O bond distances ranging from 3.12–3.73 Å. In the third Cs1+ site, Cs1+ is bonded in a 12-coordinate geometry to twelve O2- atoms. There are a spread of Cs–O bond distances ranging from 3.12–3.72 Å. There are five inequivalent K1+ sites. In the first K1+ site, K1+ is bonded to eight O2- atoms to form KO8 hexagonal bipyramids that share corners with two MoO6 octahedra, corners with two PO4 tetrahedra, and edges with four MoO6 octahedra. The corner-sharing octahedral tilt angles are 58°. There are a spread of K–O bond distances ranging from 2.74–2.93 Å. In the second K1+ site, K1+ is bonded to eight O2- atoms to form KO8 hexagonal bipyramids that share corners with two MoO6 octahedra, corners with two PO4 tetrahedra, and edges with four MoO6 octahedra. The corner-sharing octahedral tilt angles are 58°. There are a spread of K–O bond distances ranging from 2.74–2.93 Å. In the third K1+ site, K1+ is bonded in a 8-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 3.00–3.42 Å. In the fourth K1+ site, K1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of K–O bond distances ranging from 2.79–3.31 Å. In the fifth K1+ site, K1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of K–O bond distances ranging from 2.79–3.30 Å. There are eight inequivalent Mo5+ sites. In the first Mo5+ site, Mo5+ is bonded to six O2- atoms to form MoO6 octahedra that share a cornercorner with one KO8 hexagonal bipyramid, a cornercorner with one MoO6 octahedra, corners with four PO4 tetrahedra, and an edgeedge with one KO8 hexagonal bipyramid. The corner-sharing octahedral tilt angles are 33°. There are a spread of Mo–O bond distances ranging from 1.75–2.15 Å. In the second Mo5+ site, Mo5+ is bonded to six O2- atoms to form MoO6 octahedra that share a cornercorner with one KO8 hexagonal bipyramid, a cornercorner with one MoO6 octahedra, corners with four PO4 tetrahedra, and an edgeedge with one KO8 hexagonal bipyramid. The corner-sharing octahedral tilt angles are 33°. There are a spread of Mo–O bond distances ranging from 1.74–2.15 Å. In the third Mo5+ site, Mo5+ is bonded to six O2- atoms to form MoO6 octahedra that share a cornercorner with one KO8 hexagonal bipyramid, a cornercorner with one MoO6 octahedra, corners with four PO4 tetrahedra, and an edgeedge with one KO8 hexagonal bipyramid. The corner-sharing octahedral tilt angles are 33°. There are a spread of Mo–O bond distances ranging from 1.74–2.14 Å. In the fourth Mo5+ site, Mo5+ is bonded to six O2- atoms to form MoO6 octahedra that share a cornercorner with one KO8 hexagonal bipyramid, a cornercorner with one MoO6 octahedra, corners with four PO4 tetrahedra, and an edgeedge with one KO8 hexagonal bipyramid. The corner-sharing octahedral tilt angles are 33°. There are a spread of Mo–O bond distances ranging from 1.75–2.15 Å. In the fifth Mo5+ site, Mo5+ is bonded to six O2- atoms to form distorted MoO6 octahedra that share a cornercorner with one MoO6 octahedra, corners with four PO4 tetrahedra, and an edgeedge with one KO8 hexagonal bipyramid. The corner-sharing octahedral tilt angles are 33°. There are a spread of Mo–O bond distances ranging from 1.74–2.22 Å. In the sixth Mo5+ site, Mo5+ is bonded to six O2- atoms to form distorted MoO6 octahedra that share a cornercorner with one MoO6 octahedra, corners with four PO4 tetrahedra, and an edgeedge with one KO8 hexagonal bipyramid. The corner-sharing octahedral tilt angles are 33°. There are a spread of Mo–O bond distances ranging from 1.74–2.22 Å. In the seventh Mo5+ site, Mo5+ is bonded to six O2- atoms to form distorted MoO6 octahedra that share a cornercorner with one MoO6 octahedra, corners with four PO4 tetrahedra, and an edgeedge with one KO8 hexagonal bipyramid. The corner-sharing octahedral tilt angles are 33°. There are a spread of Mo–O bond distances ranging from 1.74–2.23 Å. In the eighth Mo5+ site, Mo5+ is bonded to six O2- atoms to form distorted MoO6 octahedra that share a cornercorner with one MoO6 octahedra, corners with four PO4 tetrahedra, and an edgeedge with one KO8 hexagonal bipyramid. The corner-sharing octahedral tilt angles are 33°. There are a spread of Mo–O bond distances ranging from 1.74–2.23 Å. There are eight inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four MoO6 octahedra. The corner-sharing octahedra tilt angles range from 40–48°. There are a spread of P–O bond distances ranging from 1.54–1.57 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four MoO6 octahedra. The corner-sharing octahedra tilt angles range from 42–47°. There are a spread of P–O bond distances ranging from 1.55–1.57 Å. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four MoO6 octahedra. The corner-sharing octahedra tilt angles range from 40–47°. There are a spread of P–O bond distances ranging from 1.54–1.57 Å. In the fourth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four MoO6 octahedra. The corner-sharing octahedra tilt angles range from 40–47°. There are a spread of P–O bond distances ranging from 1.54–1.57 Å. In the fifth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one KO8 hexagonal bipyramid and corners with four MoO6 octahedra. The corner-sharing octahedra tilt angles range from 46–52°. There is two shorter (1.55 Å) and two longer (1.56 Å) P–O bond length. In the sixth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one KO8 hexagonal bipyramid and corners with four MoO6 octahedra. The corner-sharing octahedra tilt angles range from 46–52°. There is two shorter (1.55 Å) and two longer (1.56 Å) P–O bond length. In the seventh P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one KO8 hexagonal bipyramid and corners with four MoO6 octahedra. The corner-sharing octahedra tilt angles range from 46–52°. There is two shorter (1.55 Å) and two longer (1.56 Å) P–O bond length. In the eighth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one KO8 hexagonal bipyramid and corners with four MoO6 octahedra. The corner-sharing octahedra tilt angles range from 46–52°. There is two shorter (1.55 Å) and two longer (1.56 Å) P–O bond length. There are forty-four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one K1+ and two Mo5+ atoms. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one K1+ and two Mo5+ atoms. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one K1+ and two Mo5+ atoms. In the fourth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one K1+ and two Mo5+ atoms. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to one Cs1+, one K1+, one Mo5+, and one P5+ atom. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to one K1+, one Mo5+, and one P5+ atom. In the seventh O2- site, O2- is bonded in a 3-coordinate geometry to two Cs1+, one K1+, one Mo5+, and one P5+ atom. In the eighth O2- site, O2- is bonded in a 3-coordinate geometry to two Cs1+, one K1+, one Mo5+, and one P5+ atom. In the ninth O2- site, O2- is bonded in a distorted single-bond geometry to two Cs1+, one K1+, and one Mo5+ atom. In the tenth O2- site, O2- is bonded in a distorted single-bond geometry to one Cs1+, two K1+, and one Mo5+ atom. In the eleventh O2- site, O2- is bonded in a distorted single-bond geometry to one Cs1+, two K1+, and one Mo5+ atom. In the twelfth O2- site, O2- is bonded in a distorted single-bond geometry to two Cs1+, one K1+, and one Mo5+ atom. In the thirteenth O2- site, O2- is bonded in a 1-coordinate geometry to one K1+, one Mo5+, and one P5+ atom. In the fourteenth O2- site, O2- is bonded in a 1-coordinate geometry to one Cs1+, one Mo5+, and one P5+ atom. In the fifteenth O2- site, O2- is bonded in a 1-coordinate geometry to one Cs1+, one K1+, one Mo5+, and one P5+ atom. In the sixteenth O2- site, O2- is bonded in a 1-coordinate geometry to one Cs1+, one K1+, one Mo5+, and one P5+ atom. In the seventeenth O2- site, O2- is bonded in a distorted single-bond geometry to one Cs1+, two K1+, and one Mo5+ atom. In the eighteenth O2- site, O2- is bonded in a distorted single-bond geometry to two Cs1+, one K1+, and one Mo5+ atom. In the nineteenth O2- site, O2- is bonded in a distorted single-bond geometry to two Cs1+, one K1+, and one Mo5+ atom. In the twentieth O2- site, O2- is bonded in a distorted single-bond geometry to one Cs1+, two K1+, and one Mo5+ atom. In the twenty-first O2- site, O2- is bonded in a 1-coordinate geometry to two K1+, one Mo5+, and one P5+ atom. In the twenty-second O2- site, O2- is bonded in a 1-coordinate geometry to one Cs1+, one K1+, one Mo5+, and one P5+ atom. In the twenty-third O2- site, O2- is bonded in a 1-coordinate geometry to one Cs1+, one K1+, one Mo5+, and one P5+ atom. In the twenty-fourth O2- site, O2- is bonded in a 1-coordinate geometry to one Cs1+, one K1+, one Mo5+, and one P5+ atom. In the twenty-fifth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Mo5+, and one P5+ atom. In the twenty-sixth O2- site, O2- is bonded in a 2-coordinate geometry to one Cs1+, one Mo5+, and one P5+ atom. In the twenty-seventh O2- site, O2- is bonded in a 2-coordinate geometry to one Cs1+, one Mo5+, and one P5+ atom. In the twenty-eighth O2- site, O2- is bonded in a 2-coordinate geometry to one Cs1+, one Mo5+, and one P5+ atom. In the twenty-ninth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Mo5+, and one P5+ atom. In the thirtieth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Mo5+, and one P5+ atom. In the thirty-first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Mo5+ and one P5+ atom. In the thirty-second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Mo5+ and one P5+ atom. In the thirty-third O2- site, O2- is bonded in a 1-coordinate geometry to one Cs1+, one K1+, one Mo5+, and one P5+ atom. In the thirty-fourth O2- site, O2- is bonded in a 1-coordinate geometry to one K1+, one Mo5+, and one P5+ atom. In the thirty-fifth O2- site, O2- is bonded in a 1-coordinate geometry to one Cs1+, one K1+, one Mo5+, and one P5+ atom. In the thirty-sixth O2- site, O2- is bonded in a 1-coordinate geometry to one Cs1+, one K1+, one Mo5+, and one P5+ atom. In the thirty-seventh O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Cs1+, one Mo5+, and one P5+ atom. In the thirty-eighth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one K1+, one Mo5+, and one P5+ atom. In the thirty-ninth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Cs1+, one Mo5+, and one P5+ atom. In the fortieth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Cs1+, one Mo5+, and one P5+ atom. In the forty-first O2- site, O2- is bonded in a 1-coordinate geometry to one Cs1+, one Mo5+, and one P5+ atom. In the forty-second O2- site, O2- is bonded in a 1-coordinate geometry to one K1+, one Mo5+, and one P5+ atom. In the forty-third O2- site, O2- is bonded in a 1-coordinate geometry to one Cs1+, one Mo5+, and one P5+ atom. In the forty-

36 MATERIALS SCIENCE↗
DOE OSTI2024

``Beads on a String" Star Formation Tied to one of the most Powerful AGN Outbursts Observed in a Cool Core Galaxy Cluster

With two central galaxies engaged in a major merger and a remarkable chain of 19 young stellar superclusters wound around them in projection, the galaxy cluster SDSS J1531+3414 ($z=0.335$) offers an excellent laboratory to study the interplay between mergers, AGN feedback, and star formation. New Chandra X-ray imaging reveals rapidly cooling hot ($T\sim 10^6$ K) intracluster gas, with two "wings" forming a concave density discontinuity near the edge of the cool core. LOFAR $144$ MHz observations uncover diffuse radio emission strikingly aligned with the "wings," suggesting that the "wings" are actually the opening to a giant X-ray supercavity. The steep radio emission is likely an ancient relic of one of the most energetic AGN outbursts observed, with $4pV > 10^{61}$ erg. To the north of the supercavity, GMOS detects warm ($T\sim 10^4$ K) ionized gas that enshrouds the stellar superclusters but is redshifted up to $+ 800$ km s$^{-1}$ with respect to the southern central galaxy. ALMA detects a similarly redshifted $\sim 10^{10}$ M$_\odot$ reservoir of cold ($T\sim 10^2$ K) molecular gas, but it is offset from the young stars by $\sim 1{-}3$ kpc. We propose that the multiphase gas originated from low-entropy gas entrained by the X-ray supercavity, attribute the offset between the young stars and the molecular gas to turbulent intracluster gas motions, and suggest that tidal interactions stimulated the "beads on a string" star formation morphology.

79 ASTRONOMY AND ASTROPHYSICS↗
DOE OSTI2020

Materials Data on K2HgCl4 by Materials Project

K2HgCl4 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded to six Cl1- atoms to form a mixture of face, edge, and corner-sharing KCl6 octahedra. The corner-sharing octahedra tilt angles range from 23–34°. There are a spread of K–Cl bond distances ranging from 3.12–3.24 Å. In the second K1+ site, K1+ is bonded to six Cl1- atoms to form a mixture of face, edge, and corner-sharing KCl6 octahedra. The corner-sharing octahedra tilt angles range from 23–34°. There are a spread of K–Cl bond distances ranging from 3.13–3.48 Å. Hg2+ is bonded in a distorted T-shaped geometry to three Cl1- atoms. There are two shorter (2.36 Å) and one longer (2.71 Å) Hg–Cl bond lengths. There are three inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 3-coordinate geometry to two K1+ and one Hg2+ atom. In the second Cl1- site, Cl1- is bonded in a distorted rectangular see-saw-like geometry to four K1+ atoms. In the third Cl1- site, Cl1- is bonded to four K1+ and one Hg2+ atom to form distorted corner-sharing ClK4Hg trigonal bipyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KMg30MnO32 by Materials Project

KMg30MnO32 is Molybdenum Carbide MAX Phase-derived structured and crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. K1+ is bonded to six O2- atoms to form KO6 octahedra that share corners with six MgO6 octahedra and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. All K–O bond lengths are 2.36 Å. There are eight inequivalent Mg2+ sites. In the first Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with two equivalent KO6 octahedra, corners with two equivalent MgO6 octahedra, corners with two equivalent MnO6 octahedra, and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are a spread of Mg–O bond distances ranging from 1.93–2.28 Å. In the second Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with two equivalent MnO6 octahedra, corners with four equivalent MgO6 octahedra, and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.10 Å) and four longer (2.14 Å) Mg–O bond lengths. In the third Mg2+ site, Mg2+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.10 Å) and four longer (2.14 Å) Mg–O bond lengths. In the fourth Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with two equivalent KO6 octahedra, corners with four equivalent MgO6 octahedra, and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (1.96 Å) and four longer (2.18 Å) Mg–O bond lengths. In the fifth Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with six MgO6 octahedra, an edgeedge with one KO6 octahedra, an edgeedge with one MnO6 octahedra, and edges with ten MgO6 octahedra. The corner-sharing octahedra tilt angles range from 1–12°. There are a spread of Mg–O bond distances ranging from 2.14–2.16 Å. In the sixth Mg2+ site, Mg2+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing MgO6 octahedra. The corner-sharing octahedra tilt angles range from 1–3°. There are a spread of Mg–O bond distances ranging from 2.13–2.17 Å. In the seventh Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with six MgO6 octahedra, an edgeedge with one MnO6 octahedra, and edges with eleven MgO6 octahedra. The corner-sharing octahedra tilt angles range from 0–7°. There are a spread of Mg–O bond distances ranging from 2.12–2.20 Å. In the eighth Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with six MgO6 octahedra, an edgeedge with one KO6 octahedra, and edges with eleven MgO6 octahedra. The corner-sharing octahedra tilt angles range from 0–11°. There are a spread of Mg–O bond distances ranging from 2.13–2.19 Å. Mn3+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with six MgO6 octahedra and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are four shorter (2.01 Å) and two longer (2.22 Å) Mn–O bond lengths. There are eleven inequivalent O2- sites. In the first O2- site, O2- is bonded to five Mg2+ and one Mn3+ atom to form OMg5Mn octahedra that share corners with six OMg5Mn octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedral tilt angles are 0°. In the second O2- site, O2- is bonded to six Mg2+ atoms to form OMg6 octahedra that share corners with six OMg5Mn octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–5°. In the third O2- site, O2- is bonded to one K1+ and five Mg2+ atoms to form a mixture of edge and corner-sharing OKMg5 octahedra. The corner-sharing octahedra tilt angles range from 0–5°. In the fourth O2- site, O2- is bonded to six Mg2+ atoms to form OMg6 octahedra that share corners with six equivalent OMg6 octahedra and edges with twelve OMg5Mn octahedra. The corner-sharing octahedra tilt angles range from 1–3°. In the fifth O2- site, O2- is bonded to five Mg2+ and one Mn3+ atom to form a mixture of edge and corner-sharing OMg5Mn octahedra. The corner-sharing octahedra tilt angles range from 0–10°. In the sixth O2- site, O2- is bonded to one K1+ and five Mg2+ atoms to form OKMg5 octahedra that share corners with six OMg5Mn octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–10°. The O–Mg bond length is 1.93 Å. In the seventh O2- site, O2- is bonded to one K1+ and five Mg2+ atoms to form OKMg5 octahedra that share corners with six OMg5Mn octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–10°. There are a spread of O–Mg bond distances ranging from 1.93–2.19 Å. In the eighth O2- site, O2- is bonded to six Mg2+ atoms to form a mixture of edge and corner-sharing OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–4°. In the ninth O2- site, O2- is bonded to six Mg2+ atoms to form OMg6 octahedra that share corners with six OKMg5 octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–6°. In the tenth O2- site, O2- is bonded to one K1+ and five Mg2+ atoms to form OKMg5 octahedra that share corners with six OMg5Mn octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–10°. Both O–Mg bond lengths are 2.19 Å. In the eleventh O2- site, O2- is bonded to one K1+ and five Mg2+ atoms to form OKMg5 octahedra that share corners with six OMg5Mn octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–10°. There are two shorter (2.14 Å) and two longer (2.19 Å) O–Mg bond lengths.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KYMg30O32 by Materials Project

KMg30YO32 is alpha Po-derived structured and crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. K1+ is bonded to six O2- atoms to form KO6 octahedra that share corners with six MgO6 octahedra and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. All K–O bond lengths are 2.36 Å. There are eight inequivalent Mg2+ sites. In the first Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with two equivalent KO6 octahedra, corners with two equivalent MgO6 octahedra, corners with two equivalent YO6 octahedra, and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are a spread of Mg–O bond distances ranging from 1.96–2.21 Å. In the second Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with two equivalent YO6 octahedra, corners with four equivalent MgO6 octahedra, and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.08 Å) and four longer (2.16 Å) Mg–O bond lengths. In the third Mg2+ site, Mg2+ is bonded to six O2- atoms to form a mixture of corner and edge-sharing MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are a spread of Mg–O bond distances ranging from 2.11–2.16 Å. In the fourth Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with two equivalent KO6 octahedra, corners with four equivalent MgO6 octahedra, and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (1.95 Å) and four longer (2.20 Å) Mg–O bond lengths. In the fifth Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with six MgO6 octahedra, an edgeedge with one KO6 octahedra, an edgeedge with one YO6 octahedra, and edges with ten MgO6 octahedra. The corner-sharing octahedra tilt angles range from 0–13°. There are a spread of Mg–O bond distances ranging from 2.13–2.21 Å. In the sixth Mg2+ site, Mg2+ is bonded to six O2- atoms to form a mixture of corner and edge-sharing MgO6 octahedra. The corner-sharing octahedra tilt angles range from 1–3°. There are a spread of Mg–O bond distances ranging from 2.15–2.17 Å. In the seventh Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with six MgO6 octahedra, an edgeedge with one YO6 octahedra, and edges with eleven MgO6 octahedra. The corner-sharing octahedra tilt angles range from 0–4°. There are a spread of Mg–O bond distances ranging from 2.10–2.22 Å. In the eighth Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with six MgO6 octahedra, an edgeedge with one KO6 octahedra, and edges with eleven MgO6 octahedra. The corner-sharing octahedra tilt angles range from 2–10°. There are a spread of Mg–O bond distances ranging from 2.14–2.18 Å. Y3+ is bonded to six O2- atoms to form YO6 octahedra that share corners with six MgO6 octahedra and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are four shorter (2.21 Å) and two longer (2.24 Å) Y–O bond lengths. There are thirteen inequivalent O2- sites. In the first O2- site, O2- is bonded to five Mg2+ and one Y3+ atom to form OYMg5 octahedra that share corners with six OYMg5 octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–1°. In the second O2- site, O2- is bonded to six Mg2+ atoms to form OMg6 octahedra that share corners with six OYMg5 octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–6°. In the third O2- site, O2- is bonded to one K1+ and five Mg2+ atoms to form a mixture of corner and edge-sharing OKMg5 octahedra. The corner-sharing octahedra tilt angles range from 0–6°. In the fourth O2- site, O2- is bonded to six Mg2+ atoms to form OMg6 octahedra that share corners with six OYMg5 octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–6°. There are two shorter (2.10 Å) and two longer (2.16 Å) O–Mg bond lengths. In the fifth O2- site, O2- is bonded to six Mg2+ atoms to form OMg6 octahedra that share corners with six equivalent OMg6 octahedra and edges with twelve OYMg5 octahedra. The corner-sharing octahedra tilt angles range from 1–5°. In the sixth O2- site, O2- is bonded to five Mg2+ and one Y3+ atom to form a mixture of corner and edge-sharing OYMg5 octahedra. The corner-sharing octahedra tilt angles range from 0–7°. In the seventh O2- site, O2- is bonded to five Mg2+ and one Y3+ atom to form a mixture of corner and edge-sharing OYMg5 octahedra. The corner-sharing octahedra tilt angles range from 0–7°. All O–Mg bond lengths are 2.21 Å. In the eighth O2- site, O2- is bonded to one K1+ and five Mg2+ atoms to form OKMg5 octahedra that share corners with six OYMg5 octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–7°. The O–Mg bond length is 1.96 Å. In the ninth O2- site, O2- is bonded to one K1+ and five Mg2+ atoms to form OKMg5 octahedra that share corners with six OYMg5 octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–7°. There are a spread of O–Mg bond distances ranging from 1.96–2.18 Å. In the tenth O2- site, O2- is bonded to six Mg2+ atoms to form a mixture of corner and edge-sharing OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. In the eleventh O2- site, O2- is bonded to six Mg2+ atoms to form OMg6 octahedra that share corners with six OKMg5 octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–6°. In the twelfth O2- site, O2- is bonded to one K1+ and five Mg2+ atoms to form OKMg5 octahedra that share corners with six OYMg5 octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–7°. Both O–Mg bond lengths are 2.18 Å. In the thirteenth O2- site, O2- is bonded to one K1+ and five Mg2+ atoms to form OKMg5 octahedra that share corners with six OYMg5 octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–7°. There are two shorter (2.13 Å) and two longer (2.18 Å) O–Mg bond lengths.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K3TiO4F3 by Materials Project

K3TiO4F3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. there are two inequivalent K sites. In the first K site, K is bonded to four O and three F atoms to form distorted KO4F3 pentagonal bipyramids that share corners with five equivalent TiO4F3 pentagonal bipyramids, corners with two equivalent OK3TiO trigonal bipyramids, and an edgeedge with one TiO4F3 pentagonal bipyramid. There are two shorter (2.73 Å) and two longer (2.82 Å) K–O bond lengths. There are two shorter (2.58 Å) and one longer (2.66 Å) K–F bond lengths. In the second K site, K is bonded in a 10-coordinate geometry to six O and four F atoms. There are a spread of K–O bond distances ranging from 2.76–3.14 Å. There are two shorter (2.79 Å) and two longer (2.96 Å) K–F bond lengths. Ti is bonded to four O and three F atoms to form distorted TiO4F3 pentagonal bipyramids that share corners with five equivalent KO4F3 pentagonal bipyramids, corners with two equivalent OK3TiO trigonal bipyramids, and an edgeedge with one KO4F3 pentagonal bipyramid. There is two shorter (1.93 Å) and two longer (1.99 Å) Ti–O bond length. There is two shorter (1.97 Å) and one longer (2.01 Å) Ti–F bond length. There are two inequivalent O sites. In the first O site, O is bonded in a 1-coordinate geometry to five K, one Ti, and one O atom. The O–O bond length is 1.48 Å. In the second O site, O is bonded to three K, one Ti, and one O atom to form distorted OK3TiO trigonal bipyramids that share corners with four equivalent FK5Ti octahedra, a cornercorner with one KO4F3 pentagonal bipyramid, a cornercorner with one TiO4F3 pentagonal bipyramid, corners with two equivalent OK3TiO trigonal bipyramids, an edgeedge with one FK5Ti octahedra, and an edgeedge with one OK3TiO trigonal bipyramid. The corner-sharing octahedra tilt angles range from 19–45°. There are two inequivalent F sites. In the first F site, F is bonded to five K and one Ti atom to form distorted FK5Ti octahedra that share corners with eight equivalent OK3TiO trigonal bipyramids, edges with two equivalent FK5Ti octahedra, and edges with two equivalent OK3TiO trigonal bipyramids. In the second F site, F is bonded in a distorted rectangular see-saw-like geometry to three K and one Ti atom.

36 MATERIALS SCIENCE↗