Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Ge”

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.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 1,279 records · Page 71
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Ca10Ge6F by Materials Project

Ca10Ge6F crystallizes in the tetragonal I-42m space group. The structure is three-dimensional. there are three inequivalent Ca sites. In the first Ca site, Ca is bonded in a rectangular see-saw-like geometry to four equivalent Ge atoms. All Ca–Ge bond lengths are 3.09 Å. In the second Ca site, Ca is bonded in a single-bond geometry to five Ge and one F atom. There are a spread of Ca–Ge bond distances ranging from 3.15–3.25 Å. The Ca–F bond length is 2.35 Å. In the third Ca site, Ca is bonded to five Ge atoms to form a mixture of distorted edge and corner-sharing CaGe5 trigonal bipyramids. There are three shorter (3.10 Å) and two longer (3.26 Å) Ca–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 8-coordinate geometry to eight Ca atoms. In the second Ge site, Ge is bonded in a 9-coordinate geometry to eight Ca and one Ge atom. The Ge–Ge bond length is 2.59 Å. F is bonded in a tetrahedral geometry to four equivalent Ca atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tm3Ge3Ru2 by Materials Project

Tm3Ru2Ge3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. there are two inequivalent Tm sites. In the first Tm site, Tm is bonded in a 2-coordinate geometry to four equivalent Ru and six Ge atoms. There are a spread of Tm–Ru bond distances ranging from 3.08–3.13 Å. There are a spread of Tm–Ge bond distances ranging from 2.97–3.12 Å. In the second Tm site, Tm is bonded in a 9-coordinate geometry to four equivalent Ru and five Ge atoms. All Tm–Ru bond lengths are 3.21 Å. There are a spread of Tm–Ge bond distances ranging from 2.91–3.29 Å. Ru is bonded in a 10-coordinate geometry to six Tm and four Ge atoms. There are a spread of Ru–Ge bond distances ranging from 2.44–2.67 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to five Tm, three equivalent Ru, and one Ge atom. The Ge–Ge bond length is 2.69 Å. In the second Ge site, Ge is bonded in a 9-coordinate geometry to seven Tm and two equivalent Ru atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tb3Ge3Ru2 by Materials Project

Tb3Ru2Ge3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. there are two inequivalent Tb sites. In the first Tb site, Tb is bonded in a 2-coordinate geometry to four equivalent Ru and seven Ge atoms. There are a spread of Tb–Ru bond distances ranging from 3.10–3.23 Å. There are a spread of Tb–Ge bond distances ranging from 3.04–3.46 Å. In the second Tb site, Tb is bonded in a 4-coordinate geometry to four equivalent Ru and five Ge atoms. All Tb–Ru bond lengths are 3.29 Å. There are a spread of Tb–Ge bond distances ranging from 2.95–3.42 Å. Ru is bonded in a 10-coordinate geometry to six Tb and four Ge atoms. There are a spread of Ru–Ge bond distances ranging from 2.46–2.71 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 10-coordinate geometry to six Tb, three equivalent Ru, and one Ge atom. The Ge–Ge bond length is 2.83 Å. In the second Ge site, Ge is bonded in a 9-coordinate geometry to seven Tb and two equivalent Ru atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ge3Te3Ir2 by Materials Project

Ir2Ge3Te3 is Skutterudite-derived structured and crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent Ir sites. In the first Ir site, Ir is bonded to four Ge and two equivalent Te atoms to form IrGe4Te2 octahedra that share corners with six IrGe4Te2 octahedra, corners with four equivalent GeGe2Ir2 tetrahedra, and corners with four equivalent TeGe2Ir2 tetrahedra. The corner-sharing octahedra tilt angles range from 50–61°. There are two shorter (2.50 Å) and two longer (2.64 Å) Ir–Ge bond lengths. Both Ir–Te bond lengths are 2.54 Å. In the second Ir site, Ir is bonded to two equivalent Ge and four Te atoms to form IrGe2Te4 octahedra that share corners with six IrGe4Te2 octahedra and corners with eight GeGe2Ir2 tetrahedra. The corner-sharing octahedra tilt angles range from 50–63°. Both Ir–Ge bond lengths are 2.65 Å. There are two shorter (2.55 Å) and two longer (2.65 Å) Ir–Te bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded to two Ir and two equivalent Ge atoms to form distorted GeGe2Ir2 tetrahedra that share corners with four IrGe4Te2 octahedra, corners with two equivalent TeGe2Ir2 tetrahedra, corners with four GeGe2Ir2 tetrahedra, and an edgeedge with one GeGe2Ir2 tetrahedra. The corner-sharing octahedra tilt angles range from 68–69°. There are one shorter (2.57 Å) and one longer (2.74 Å) Ge–Ge bond lengths. In the second Ge site, Ge is bonded to two equivalent Ir and two equivalent Te atoms to form distorted GeTe2Ir2 tetrahedra that share corners with four equivalent IrGe2Te4 octahedra, corners with six GeGe2Ir2 tetrahedra, and an edgeedge with one GeTe2Ir2 tetrahedra. The corner-sharing octahedral tilt angles are 70°. There are one shorter (2.82 Å) and one longer (2.89 Å) Ge–Te bond lengths. There are two inequivalent Te sites. In the first Te site, Te is bonded to two equivalent Ir and two equivalent Ge atoms to form TeGe2Ir2 tetrahedra that share corners with four equivalent IrGe4Te2 octahedra, corners with two equivalent TeGe2Ir2 tetrahedra, corners with four equivalent GeGe2Ir2 tetrahedra, and an edgeedge with one TeGe2Ir2 tetrahedra. The corner-sharing octahedra tilt angles range from 70–72°. In the second Te site, Te is bonded in a 2-coordinate geometry to two Ir and two equivalent Te atoms. There are one shorter (2.91 Å) and one longer (3.13 Å) Te–Te bond lengths.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Dy2Al3Ge4 by Materials Project

Al3Dy2Ge4 crystallizes in the orthorhombic Cmce space group. The structure is three-dimensional. Dy is bonded in a 8-coordinate geometry to two equivalent Al and eight Ge atoms. Both Dy–Al bond lengths are 3.19 Å. There are a spread of Dy–Ge bond distances ranging from 3.10–3.22 Å. There are two inequivalent Al sites. In the first Al site, Al is bonded to six Ge atoms to form distorted corner-sharing AlGe6 octahedra. The corner-sharing octahedral tilt angles are 31°. There are four shorter (2.60 Å) and two longer (2.77 Å) Al–Ge bond lengths. In the second Al site, Al is bonded in a 3-coordinate geometry to two equivalent Dy and five Ge atoms. There are a spread of Al–Ge bond distances ranging from 2.55–2.91 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to four equivalent Dy, three Al, and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.91 Å. In the second Ge site, Ge is bonded in a 9-coordinate geometry to four equivalent Dy and five Al atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tb3Ge3Ir2 by Materials Project

Tb3Ir2Ge3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. there are two inequivalent Tb sites. In the first Tb site, Tb is bonded in a 11-coordinate geometry to four equivalent Ir and seven Ge atoms. There are a spread of Tb–Ir bond distances ranging from 3.00–3.29 Å. There are a spread of Tb–Ge bond distances ranging from 3.03–3.28 Å. In the second Tb site, Tb is bonded in a 9-coordinate geometry to four equivalent Ir and five Ge atoms. All Tb–Ir bond lengths are 3.10 Å. There are a spread of Tb–Ge bond distances ranging from 3.03–3.14 Å. Ir is bonded in a 10-coordinate geometry to six Tb and four Ge atoms. There are a spread of Ir–Ge bond distances ranging from 2.50–2.70 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 10-coordinate geometry to six Tb, three equivalent Ir, and one Ge atom. The Ge–Ge bond length is 2.79 Å. In the second Ge site, Ge is bonded in a 9-coordinate geometry to seven Tb and two equivalent Ir atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ho3(FeGe)4 by Materials Project

Ho3(FeGe)4 crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. there are two inequivalent Ho sites. In the first Ho site, Ho is bonded in a 12-coordinate geometry to six equivalent Fe and six Ge atoms. There are two shorter (2.92 Å) and four longer (3.06 Å) Ho–Fe bond lengths. There are two shorter (2.92 Å) and four longer (3.03 Å) Ho–Ge bond lengths. In the second Ho site, Ho is bonded to six Ge atoms to form distorted edge-sharing HoGe6 octahedra. There are four shorter (2.93 Å) and two longer (2.98 Å) Ho–Ge bond lengths. Fe is bonded in a 4-coordinate geometry to three equivalent Ho, one Fe, and four Ge atoms. The Fe–Fe bond length is 2.43 Å. There are a spread of Fe–Ge bond distances ranging from 2.50–2.57 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to three Ho and six equivalent Fe atoms. In the second Ge site, Ge is bonded in a 9-coordinate geometry to six Ho, two equivalent Fe, and one Ge atom. The Ge–Ge bond length is 2.63 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Dy3Ge3Ru2 by Materials Project

Dy3Ru2Ge3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. there are two inequivalent Dy sites. In the first Dy site, Dy is bonded in a 2-coordinate geometry to four equivalent Ru and seven Ge atoms. There are a spread of Dy–Ru bond distances ranging from 3.10–3.21 Å. There are a spread of Dy–Ge bond distances ranging from 3.03–3.47 Å. In the second Dy site, Dy is bonded in a 4-coordinate geometry to four equivalent Ru and five Ge atoms. All Dy–Ru bond lengths are 3.28 Å. There are a spread of Dy–Ge bond distances ranging from 2.95–3.39 Å. Ru is bonded in a 10-coordinate geometry to six Dy and four Ge atoms. There are a spread of Ru–Ge bond distances ranging from 2.46–2.71 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 10-coordinate geometry to six Dy, three equivalent Ru, and one Ge atom. The Ge–Ge bond length is 2.79 Å. In the second Ge site, Ge is bonded in a 9-coordinate geometry to seven Dy and two equivalent Ru atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sm3(CuGe)4 by Materials Project

Sm3(CuGe)4 crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. there are two inequivalent Sm sites. In the first Sm site, Sm is bonded to six Ge atoms to form distorted edge-sharing SmGe6 octahedra. There are four shorter (2.99 Å) and two longer (3.06 Å) Sm–Ge bond lengths. In the second Sm site, Sm is bonded in a 12-coordinate geometry to six equivalent Cu and six Ge atoms. There are four shorter (3.04 Å) and two longer (3.12 Å) Sm–Cu bond lengths. There are two shorter (3.06 Å) and four longer (3.12 Å) Sm–Ge bond lengths. Cu is bonded in a 10-coordinate geometry to three equivalent Sm, one Cu, and four Ge atoms. The Cu–Cu bond length is 2.53 Å. There are a spread of Cu–Ge bond distances ranging from 2.53–2.66 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to three Sm and six equivalent Cu atoms. In the second Ge site, Ge is bonded in a 9-coordinate geometry to six Sm, two equivalent Cu, and one Ge atom. The Ge–Ge bond length is 2.55 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Mg(MnGe)6 by Materials Project

Mg(MnGe)6 crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. Mg is bonded to eight Ge atoms to form distorted edge-sharing MgGe8 hexagonal bipyramids. There are two shorter (2.68 Å) and six longer (2.98 Å) Mg–Ge bond lengths. Mn is bonded in a 12-coordinate geometry to six Ge atoms. There are a spread of Mn–Ge bond distances ranging from 2.50–2.67 Å. There are three inequivalent Ge sites. In the first Ge site, Ge is bonded in a 8-coordinate geometry to one Mg, six equivalent Mn, and one Ge atom. The Ge–Ge bond length is 2.68 Å. In the second Ge site, Ge is bonded in a 6-coordinate geometry to six equivalent Mn atoms. In the third Ge site, Ge is bonded in a 9-coordinate geometry to three equivalent Mg and six equivalent Mn atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tm3Fe2Ge3 by Materials Project

Tm3Fe2Ge3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. there are two inequivalent Tm sites. In the first Tm site, Tm is bonded in a 5-coordinate geometry to four equivalent Fe and five Ge atoms. All Tm–Fe bond lengths are 3.16 Å. There are a spread of Tm–Ge bond distances ranging from 2.85–3.23 Å. In the second Tm site, Tm is bonded in a 2-coordinate geometry to four equivalent Fe and seven Ge atoms. There are a spread of Tm–Fe bond distances ranging from 3.00–3.12 Å. There are a spread of Tm–Ge bond distances ranging from 2.93–3.28 Å. Fe is bonded in a 4-coordinate geometry to six Tm and four Ge atoms. There are a spread of Fe–Ge bond distances ranging from 2.35–2.59 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to seven Tm and two equivalent Fe atoms. In the second Ge site, Ge is bonded in a 10-coordinate geometry to six Tm, three equivalent Fe, and one Ge atom. The Ge–Ge bond length is 2.80 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ba2Ge3 by Materials Project

Ba2Ge3 crystallizes in the orthorhombic Imm2 space group. The structure is three-dimensional. Ba is bonded in a 8-coordinate geometry to nine Ge atoms. There are a spread of Ba–Ge bond distances ranging from 3.47–3.75 Å. There are three inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to six equivalent Ba and three Ge atoms. There are one shorter (2.46 Å) and two longer (2.54 Å) Ge–Ge bond lengths. In the second Ge site, Ge is bonded in a 7-coordinate geometry to six equivalent Ba and one Ge atom. In the third Ge site, Ge is bonded in a 8-coordinate geometry to six equivalent Ba and two equivalent Ge atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Li2Nd2Ge3 by Materials Project

Li2Nd2Ge3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Li is bonded to three equivalent Nd and four Ge atoms to form a mixture of distorted edge, face, and corner-sharing LiNd3Ge4 tetrahedra. There are one shorter (3.13 Å) and two longer (3.16 Å) Li–Nd bond lengths. There are a spread of Li–Ge bond distances ranging from 2.57–2.74 Å. There are two inequivalent Nd sites. In the first Nd site, Nd is bonded in a 5-coordinate geometry to nine Ge atoms. There are a spread of Nd–Ge bond distances ranging from 3.13–3.33 Å. In the second Nd site, Nd is bonded in a 12-coordinate geometry to six equivalent Li and six Ge atoms. There are four shorter (3.12 Å) and two longer (3.19 Å) Nd–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 1-coordinate geometry to one Li, six Nd, and two equivalent Ge atoms. There are one shorter (2.51 Å) and one longer (2.54 Å) Ge–Ge bond lengths. In the second Ge site, Ge is bonded in a 6-coordinate geometry to six equivalent Li and three Nd atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Li2Sm2Ge3 by Materials Project

Li2Sm2Ge3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Li is bonded to three equivalent Sm and four Ge atoms to form a mixture of distorted corner, edge, and face-sharing LiSm3Ge4 tetrahedra. There are one shorter (3.11 Å) and two longer (3.15 Å) Li–Sm bond lengths. There are a spread of Li–Ge bond distances ranging from 2.56–2.72 Å. There are two inequivalent Sm sites. In the first Sm site, Sm is bonded in a 5-coordinate geometry to nine Ge atoms. There are a spread of Sm–Ge bond distances ranging from 3.11–3.31 Å. In the second Sm site, Sm is bonded in a 12-coordinate geometry to six equivalent Li and six Ge atoms. There are four shorter (3.09 Å) and two longer (3.17 Å) Sm–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 1-coordinate geometry to one Li, six Sm, and two equivalent Ge atoms. There are one shorter (2.50 Å) and one longer (2.53 Å) Ge–Ge bond lengths. In the second Ge site, Ge is bonded in a 6-coordinate geometry to six equivalent Li and three Sm atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Np2Tc3Ge4 by Materials Project

Np2Tc3Ge4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Np is bonded in a 10-coordinate geometry to two equivalent Tc and eight Ge atoms. There are one shorter (2.89 Å) and one longer (2.98 Å) Np–Tc bond lengths. There are a spread of Np–Ge bond distances ranging from 2.94–3.10 Å. There are two inequivalent Tc sites. In the first Tc site, Tc is bonded in a 7-coordinate geometry to two equivalent Np and five Ge atoms. There are a spread of Tc–Ge bond distances ranging from 2.49–2.60 Å. In the second Tc site, Tc is bonded to six Ge atoms to form distorted corner-sharing TcGe6 octahedra. The corner-sharing octahedral tilt angles are 22°. All Tc–Ge bond lengths are 2.55 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 8-coordinate geometry to four equivalent Np and four Tc atoms. In the second Ge site, Ge is bonded in a 10-coordinate geometry to four equivalent Np, four Tc, and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.86 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Pr2Ge2Ru by Materials Project

Pr2RuGe2 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent Pr sites. In the first Pr site, Pr is bonded in a 2-coordinate geometry to four equivalent Ru and six Ge atoms. There are a spread of Pr–Ru bond distances ranging from 3.13–3.39 Å. There are a spread of Pr–Ge bond distances ranging from 3.05–3.34 Å. In the second Pr site, Pr is bonded in a 6-coordinate geometry to two equivalent Ru and six Ge atoms. Both Pr–Ru bond lengths are 3.47 Å. There are a spread of Pr–Ge bond distances ranging from 3.00–3.46 Å. Ru is bonded in a 4-coordinate geometry to six Pr and four Ge atoms. There are a spread of Ru–Ge bond distances ranging from 2.49–2.66 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 10-coordinate geometry to five Pr and three equivalent Ru atoms. In the second Ge site, Ge is bonded in a 9-coordinate geometry to seven Pr, one Ru, and one Ge atom. The Ge–Ge bond length is 2.74 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Er3(FeGe)4 by Materials Project

Er3(FeGe)4 crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. there are two inequivalent Er sites. In the first Er site, Er is bonded to six Ge atoms to form distorted edge-sharing ErGe6 octahedra. There are four shorter (2.92 Å) and two longer (2.98 Å) Er–Ge bond lengths. In the second Er site, Er is bonded in a 12-coordinate geometry to six equivalent Fe and six Ge atoms. There are two shorter (2.92 Å) and four longer (3.06 Å) Er–Fe bond lengths. There are two shorter (2.91 Å) and four longer (3.02 Å) Er–Ge bond lengths. Fe is bonded in a 4-coordinate geometry to three equivalent Er, one Fe, and four Ge atoms. The Fe–Fe bond length is 2.43 Å. There are three shorter (2.50 Å) and one longer (2.57 Å) Fe–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to three Er and six equivalent Fe atoms. In the second Ge site, Ge is bonded in a 9-coordinate geometry to six Er, two equivalent Fe, and one Ge atom. The Ge–Ge bond length is 2.63 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Yb3(CuGe)4 by Materials Project

Yb3Cu4Ge4 crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. there are two inequivalent Yb sites. In the first Yb site, Yb is bonded to six Ge atoms to form distorted edge-sharing YbGe6 octahedra. There are four shorter (2.98 Å) and two longer (3.00 Å) Yb–Ge bond lengths. In the second Yb site, Yb is bonded in a 12-coordinate geometry to six equivalent Cu and six Ge atoms. There are four shorter (3.00 Å) and two longer (3.02 Å) Yb–Cu bond lengths. There are two shorter (2.97 Å) and four longer (3.04 Å) Yb–Ge bond lengths. Cu is bonded in a 12-coordinate geometry to three equivalent Yb, one Cu, and four Ge atoms. The Cu–Cu bond length is 2.54 Å. There are a spread of Cu–Ge bond distances ranging from 2.49–2.58 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to three Yb and six equivalent Cu atoms. In the second Ge site, Ge is bonded in a 9-coordinate geometry to six Yb, two equivalent Cu, and one Ge atom. The Ge–Ge bond length is 2.47 Å.

36 MATERIALS SCIENCE↗