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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 883 records · Page 49
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DOE OSTI2020

Materials Data on Hf3Nb2Ga3 by Materials Project

Hf3Nb2Ga3 crystallizes in the hexagonal P6_3/mcm space group. The structure is three-dimensional. Hf is bonded in a 5-coordinate geometry to four equivalent Nb and five equivalent Ga atoms. All Hf–Nb bond lengths are 3.35 Å. There are a spread of Hf–Ga bond distances ranging from 2.75–2.98 Å. Nb is bonded in a 6-coordinate geometry to six equivalent Hf, two equivalent Nb, and six equivalent Ga atoms. Both Nb–Nb bond lengths are 2.73 Å. All Nb–Ga bond lengths are 2.79 Å. Ga is bonded in a 9-coordinate geometry to five equivalent Hf and four equivalent Nb atoms.

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DOE OSTI2020

Materials Data on HfSbRu by Materials Project

HfRuSb is half-Heusler structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. Hf is bonded to four equivalent Ru and six equivalent Sb atoms to form a mixture of distorted face and corner-sharing HfSb6Ru4 tetrahedra. All Hf–Ru bond lengths are 2.74 Å. All Hf–Sb bond lengths are 3.16 Å. Ru is bonded in a body-centered cubic geometry to four equivalent Hf and four equivalent Sb atoms. All Ru–Sb bond lengths are 2.74 Å. Sb is bonded in a 10-coordinate geometry to six equivalent Hf and four equivalent Ru atoms.

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DOE OSTI2020

Materials Data on HfGaNi2 by Materials Project

HfNi2Ga is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Hf is bonded in a distorted body-centered cubic geometry to eight equivalent Ni and six equivalent Ga atoms. All Hf–Ni bond lengths are 2.63 Å. All Hf–Ga bond lengths are 3.04 Å. Ni is bonded in a distorted body-centered cubic geometry to four equivalent Hf and four equivalent Ga atoms. All Ni–Ga bond lengths are 2.63 Å. Ga is bonded in a distorted body-centered cubic geometry to six equivalent Hf and eight equivalent Ni atoms.

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DOE OSTI2020

Materials Data on HfGaCo2 by Materials Project

Co2HfGa is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Hf is bonded in a distorted body-centered cubic geometry to eight equivalent Co and six equivalent Ga atoms. All Hf–Co bond lengths are 2.61 Å. All Hf–Ga bond lengths are 3.02 Å. Co is bonded in a distorted body-centered cubic geometry to four equivalent Hf and four equivalent Ga atoms. All Co–Ga bond lengths are 2.61 Å. Ga is bonded in a 8-coordinate geometry to six equivalent Hf and eight equivalent Co atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on HfNi2Sn by Materials Project

HfNi2Sn is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Hf is bonded in a distorted body-centered cubic geometry to eight equivalent Ni and six equivalent Sn atoms. All Hf–Ni bond lengths are 2.72 Å. All Hf–Sn bond lengths are 3.14 Å. Ni is bonded in a distorted body-centered cubic geometry to four equivalent Hf and four equivalent Sn atoms. All Ni–Sn bond lengths are 2.72 Å. Sn is bonded in a 8-coordinate geometry to six equivalent Hf and eight equivalent Ni atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Hf2SnC by Materials Project

Hf2SnC is H-Phase structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Hf is bonded in a 3-coordinate geometry to three equivalent Sn and three equivalent C atoms. All Hf–Sn bond lengths are 3.08 Å. All Hf–C bond lengths are 2.29 Å. Sn is bonded in a 12-coordinate geometry to six equivalent Hf atoms. C is bonded to six equivalent Hf atoms to form edge-sharing CHf6 octahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Hf2ReNi by Materials Project

Hf2ReNi is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Hf is bonded in a body-centered cubic geometry to four equivalent Re and four equivalent Ni atoms. All Hf–Re bond lengths are 2.80 Å. All Hf–Ni bond lengths are 2.80 Å. Re is bonded in a body-centered cubic geometry to eight equivalent Hf atoms. Ni is bonded in a body-centered cubic geometry to eight equivalent Hf atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Hf2SbP by Materials Project

Hf2SbP is H-Phase structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Hf is bonded to three equivalent Sb and three equivalent P atoms to form a mixture of face, edge, and corner-sharing HfSb3P3 octahedra. The corner-sharing octahedra tilt angles range from 0–44°. All Hf–Sb bond lengths are 2.94 Å. All Hf–P bond lengths are 2.58 Å. Sb is bonded to six equivalent Hf atoms to form distorted SbHf6 pentagonal pyramids that share corners with six equivalent PHf6 octahedra, edges with six equivalent PHf6 octahedra, and edges with six equivalent SbHf6 pentagonal pyramids. The corner-sharing octahedral tilt angles are 10°. P is bonded to six equivalent Hf atoms to form PHf6 octahedra that share corners with six equivalent SbHf6 pentagonal pyramids, edges with six equivalent PHf6 octahedra, and edges with six equivalent SbHf6 pentagonal pyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on HfAl3 by Materials Project

Al3Hf is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Hf is bonded to twelve Al atoms to form HfAl12 cuboctahedra that share corners with four equivalent AlHf4Al8 cuboctahedra, corners with eight equivalent HfAl12 cuboctahedra, edges with four equivalent HfAl12 cuboctahedra, edges with twenty AlHf4Al8 cuboctahedra, faces with five equivalent HfAl12 cuboctahedra, and faces with thirteen AlHf4Al8 cuboctahedra. There are a spread of Hf–Al bond distances ranging from 2.83–3.00 Å. There are three inequivalent Al sites. In the first Al site, Al is bonded to four equivalent Hf and eight Al atoms to form distorted AlHf4Al8 cuboctahedra that share corners with four equivalent HfAl12 cuboctahedra, corners with eight equivalent AlHf4Al8 cuboctahedra, edges with four equivalent HfAl12 cuboctahedra, edges with twenty AlHf4Al8 cuboctahedra, faces with five equivalent HfAl12 cuboctahedra, and faces with thirteen AlHf4Al8 cuboctahedra. There are four shorter (2.93 Å) and four longer (2.94 Å) Al–Al bond lengths. In the second Al site, Al is bonded to four equivalent Hf and eight Al atoms to form distorted AlHf4Al8 cuboctahedra that share corners with twelve AlHf4Al8 cuboctahedra, edges with eight equivalent HfAl12 cuboctahedra, edges with sixteen AlHf4Al8 cuboctahedra, faces with four equivalent HfAl12 cuboctahedra, and faces with fourteen AlHf4Al8 cuboctahedra. All Al–Al bond lengths are 2.83 Å. In the third Al site, Al is bonded to four equivalent Hf and eight Al atoms to form AlHf4Al8 cuboctahedra that share corners with twelve AlHf4Al8 cuboctahedra, edges with eight equivalent HfAl12 cuboctahedra, edges with sixteen AlHf4Al8 cuboctahedra, faces with four equivalent HfAl12 cuboctahedra, and faces with fourteen AlHf4Al8 cuboctahedra. All Al–Al bond lengths are 2.83 Å.

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DOE OSTI2020

Materials Data on HfCuP by Materials Project

HfCuP is Ilmenite-like structured and crystallizes in the trigonal P3m1 space group. The structure is three-dimensional. Hf is bonded in a 6-coordinate geometry to three equivalent Cu and three equivalent P atoms. All Hf–Cu bond lengths are 2.83 Å. All Hf–P bond lengths are 2.50 Å. Cu is bonded in a 4-coordinate geometry to three equivalent Hf and one P atom. The Cu–P bond length is 2.25 Å. P is bonded in a rectangular see-saw-like geometry to three equivalent Hf and one Cu atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on HfCoSb by Materials Project

HfCoSb is half-Heusler structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. Hf is bonded to six equivalent Co and four equivalent Sb atoms to form a mixture of distorted face and corner-sharing HfCo6Sb4 tetrahedra. All Hf–Co bond lengths are 3.15 Å. All Hf–Sb bond lengths are 2.73 Å. Co is bonded in a 10-coordinate geometry to six equivalent Hf and four equivalent Sb atoms. All Co–Sb bond lengths are 2.73 Å. Sb is bonded in a body-centered cubic geometry to four equivalent Hf and four equivalent Co atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on HfInCu2 by Materials Project

HfCu2In is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Hf is bonded in a body-centered cubic geometry to eight equivalent Cu and six equivalent In atoms. All Hf–Cu bond lengths are 2.77 Å. All Hf–In bond lengths are 3.20 Å. Cu is bonded in a body-centered cubic geometry to four equivalent Hf and four equivalent In atoms. All Cu–In bond lengths are 2.77 Å. In is bonded in a distorted body-centered cubic geometry to six equivalent Hf and eight equivalent Cu atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on HfMoSe by Materials Project

HfMoSe is half-Heusler structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. Hf is bonded in a body-centered cubic geometry to four equivalent Mo and four equivalent Se atoms. All Hf–Mo bond lengths are 2.75 Å. All Hf–Se bond lengths are 2.75 Å. Mo is bonded to four equivalent Hf atoms to form distorted MoHf4 tetrahedra that share corners with four equivalent SeHf4 tetrahedra, corners with twelve equivalent MoHf4 tetrahedra, and edges with six equivalent SeHf4 tetrahedra. Se is bonded to four equivalent Hf atoms to form distorted SeHf4 tetrahedra that share corners with four equivalent MoHf4 tetrahedra, corners with twelve equivalent SeHf4 tetrahedra, and edges with six equivalent MoHf4 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KHfNi by Materials Project

KHfNi is half-Heusler structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. K is bonded in a body-centered cubic geometry to four equivalent Hf and four equivalent Ni atoms. All K–Hf bond lengths are 2.81 Å. All K–Ni bond lengths are 2.81 Å. Hf is bonded in a 4-coordinate geometry to four equivalent K and six equivalent Ni atoms. All Hf–Ni bond lengths are 3.25 Å. Ni is bonded to four equivalent K and six equivalent Hf atoms to form a mixture of distorted face and corner-sharing NiK4Hf6 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on HfMnTl by Materials Project

HfMnTl is half-Heusler structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. Hf is bonded in a body-centered cubic geometry to four equivalent Mn and four equivalent Tl atoms. All Hf–Mn bond lengths are 2.80 Å. All Hf–Tl bond lengths are 2.80 Å. Mn is bonded to four equivalent Hf atoms to form distorted MnHf4 tetrahedra that share corners with four equivalent TlHf4 tetrahedra, corners with twelve equivalent MnHf4 tetrahedra, and edges with six equivalent TlHf4 tetrahedra. Tl is bonded to four equivalent Hf atoms to form distorted TlHf4 tetrahedra that share corners with four equivalent MnHf4 tetrahedra, corners with twelve equivalent TlHf4 tetrahedra, and edges with six equivalent MnHf4 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SrHfRe2 by Materials Project

SrHfRe2 crystallizes in the cubic F-43m space group. The structure is three-dimensional. Sr is bonded in a distorted body-centered cubic geometry to four equivalent Hf and ten Re atoms. All Sr–Hf bond lengths are 2.92 Å. There are four shorter (2.92 Å) and six longer (3.37 Å) Sr–Re bond lengths. Hf is bonded in a distorted body-centered cubic geometry to four equivalent Sr and four equivalent Re atoms. All Hf–Re bond lengths are 2.92 Å. There are two inequivalent Re sites. In the first Re site, Re is bonded to four equivalent Sr and four equivalent Re atoms to form distorted ReSr4Re4 tetrahedra that share corners with twelve equivalent ReSr6Hf4Re4 tetrahedra, edges with twelve equivalent ReSr4Re4 tetrahedra, and faces with four equivalent ReSr6Hf4Re4 tetrahedra. All Re–Re bond lengths are 2.92 Å. In the second Re site, Re is bonded to six equivalent Sr, four equivalent Hf, and four equivalent Re atoms to form distorted ReSr6Hf4Re4 tetrahedra that share corners with eighteen ReSr4Re4 tetrahedra and faces with sixteen ReSr6Hf4Re4 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on HfSi2Br by Materials Project

HfSi2Br is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Hf is bonded in a distorted body-centered cubic geometry to eight equivalent Si and six equivalent Br atoms. All Hf–Si bond lengths are 2.94 Å. All Hf–Br bond lengths are 3.39 Å. Si is bonded in a body-centered cubic geometry to four equivalent Hf and four equivalent Br atoms. All Si–Br bond lengths are 2.94 Å. Br is bonded in a distorted body-centered cubic geometry to six equivalent Hf and eight equivalent Si atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CaHfBe by Materials Project

CaBeHf is half-Heusler structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. Ca is bonded to four equivalent Be and six equivalent Hf atoms to form a mixture of distorted corner and face-sharing CaHf6Be4 tetrahedra. All Ca–Be bond lengths are 2.83 Å. All Ca–Hf bond lengths are 3.27 Å. Be is bonded in a body-centered cubic geometry to four equivalent Ca and four equivalent Hf atoms. All Be–Hf bond lengths are 2.83 Å. Hf is bonded in a 4-coordinate geometry to six equivalent Ca and four equivalent Be atoms.

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