Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Pm”

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 199 records · Page 11

Materials Data on CePm3 by Materials Project

Pm3Ce is Magnesium-derived structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Pm is bonded to eight equivalent Pm and four equivalent Ce atoms to form PmCe4Pm8 cuboctahedra that share corners with four equivalent CePm12 cuboctahedra, corners with fourteen equivalent PmCe4Pm8 cuboctahedra, edges with six equivalent CePm12 cuboctahedra, edges with twelve equivalent PmCe4Pm8 cuboctahedra, faces with four equivalent CePm12 cuboctahedra, and faces with sixteen equivalent PmCe4Pm8 cuboctahedra. There are two shorter (3.66 Å) and six longer (3.67 Å) Pm–Pm bond lengths. There are two shorter (3.66 Å) and two longer (3.67 Å) Pm–Ce bond lengths. Ce is bonded to twelve equivalent Pm atoms to form CePm12 cuboctahedra that share corners with six equivalent CePm12 cuboctahedra, corners with twelve equivalent PmCe4Pm8 cuboctahedra, edges with eighteen equivalent PmCe4Pm8 cuboctahedra, faces with eight equivalent CePm12 cuboctahedra, and faces with twelve equivalent PmCe4Pm8 cuboctahedra.

36 MATERIALS SCIENCE↗

Materials Data on PmHf by Materials Project

PmHf crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. Pm is bonded to six equivalent Pm and six equivalent Hf atoms to form PmPm6Hf6 cuboctahedra that share corners with eighteen equivalent PmPm6Hf6 cuboctahedra, edges with six equivalent PmPm6Hf6 cuboctahedra, edges with twelve equivalent HfPm6Hf6 cuboctahedra, faces with eight equivalent PmPm6Hf6 cuboctahedra, and faces with twelve equivalent HfPm6Hf6 cuboctahedra. All Pm–Pm bond lengths are 3.37 Å. All Pm–Hf bond lengths are 3.39 Å. Hf is bonded to six equivalent Pm and six equivalent Hf atoms to form HfPm6Hf6 cuboctahedra that share corners with eighteen equivalent HfPm6Hf6 cuboctahedra, edges with six equivalent HfPm6Hf6 cuboctahedra, edges with twelve equivalent PmPm6Hf6 cuboctahedra, faces with eight equivalent HfPm6Hf6 cuboctahedra, and faces with twelve equivalent PmPm6Hf6 cuboctahedra. All Hf–Hf bond lengths are 3.37 Å.

36 MATERIALS SCIENCE↗

Materials Data on Pm3Zr by Materials Project

Pm3Zr is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Pm is bonded to eight equivalent Pm and four equivalent Zr atoms to form distorted PmPm8Zr4 cuboctahedra that share corners with four equivalent ZrPm12 cuboctahedra, corners with fourteen equivalent PmPm8Zr4 cuboctahedra, edges with six equivalent ZrPm12 cuboctahedra, edges with twelve equivalent PmPm8Zr4 cuboctahedra, faces with four equivalent ZrPm12 cuboctahedra, and faces with sixteen equivalent PmPm8Zr4 cuboctahedra. There are a spread of Pm–Pm bond distances ranging from 3.44–3.66 Å. There are two shorter (3.49 Å) and two longer (3.55 Å) Pm–Zr bond lengths. Zr is bonded to twelve equivalent Pm atoms to form ZrPm12 cuboctahedra that share corners with six equivalent ZrPm12 cuboctahedra, corners with twelve equivalent PmPm8Zr4 cuboctahedra, edges with eighteen equivalent PmPm8Zr4 cuboctahedra, faces with eight equivalent ZrPm12 cuboctahedra, and faces with twelve equivalent PmPm8Zr4 cuboctahedra.

36 MATERIALS SCIENCE↗

Materials Data on TbPm3 by Materials Project

TbPm3 is Magnesium-derived structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Tb is bonded to twelve equivalent Pm atoms to form TbPm12 cuboctahedra that share corners with six equivalent TbPm12 cuboctahedra, corners with twelve equivalent PmTb4Pm8 cuboctahedra, edges with eighteen equivalent PmTb4Pm8 cuboctahedra, faces with eight equivalent TbPm12 cuboctahedra, and faces with twelve equivalent PmTb4Pm8 cuboctahedra. There are six shorter (3.64 Å) and six longer (3.65 Å) Tb–Pm bond lengths. Pm is bonded to four equivalent Tb and eight equivalent Pm atoms to form PmTb4Pm8 cuboctahedra that share corners with four equivalent TbPm12 cuboctahedra, corners with fourteen equivalent PmTb4Pm8 cuboctahedra, edges with six equivalent TbPm12 cuboctahedra, edges with twelve equivalent PmTb4Pm8 cuboctahedra, faces with four equivalent TbPm12 cuboctahedra, and faces with sixteen equivalent PmTb4Pm8 cuboctahedra. There are six shorter (3.64 Å) and two longer (3.66 Å) Pm–Pm bond lengths.

36 MATERIALS SCIENCE↗

Materials Data on Pm3Np by Materials Project

NpPm3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Np is bonded to twelve equivalent Pm atoms to form NpPm12 cuboctahedra that share corners with six equivalent NpPm12 cuboctahedra, corners with twelve equivalent PmPm8Np4 cuboctahedra, edges with eighteen equivalent PmPm8Np4 cuboctahedra, faces with eight equivalent NpPm12 cuboctahedra, and faces with twelve equivalent PmPm8Np4 cuboctahedra. There are six shorter (3.52 Å) and six longer (3.58 Å) Np–Pm bond lengths. Pm is bonded to four equivalent Np and eight equivalent Pm atoms to form PmPm8Np4 cuboctahedra that share corners with four equivalent NpPm12 cuboctahedra, corners with fourteen equivalent PmPm8Np4 cuboctahedra, edges with six equivalent NpPm12 cuboctahedra, edges with twelve equivalent PmPm8Np4 cuboctahedra, faces with four equivalent NpPm12 cuboctahedra, and faces with sixteen equivalent PmPm8Np4 cuboctahedra. There are a spread of Pm–Pm bond distances ranging from 3.53–3.64 Å.

36 MATERIALS SCIENCE↗

Materials Data on Pm3Al by Materials Project

Pm3Al is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Pm is bonded in a 12-coordinate geometry to eight equivalent Pm and four equivalent Al atoms. There are a spread of Pm–Pm bond distances ranging from 3.29–3.75 Å. There are two shorter (3.31 Å) and two longer (3.52 Å) Pm–Al bond lengths. Al is bonded to twelve equivalent Pm atoms to form a mixture of face and corner-sharing AlPm12 cuboctahedra.

36 MATERIALS SCIENCE↗

Materials Data on Pm3Ho by Materials Project

HoPm3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Ho is bonded to twelve equivalent Pm atoms to form HoPm12 cuboctahedra that share corners with six equivalent HoPm12 cuboctahedra, corners with twelve equivalent PmPm8Ho4 cuboctahedra, edges with eighteen equivalent PmPm8Ho4 cuboctahedra, faces with eight equivalent HoPm12 cuboctahedra, and faces with twelve equivalent PmPm8Ho4 cuboctahedra. There are six shorter (3.63 Å) and six longer (3.65 Å) Ho–Pm bond lengths. Pm is bonded to four equivalent Ho and eight equivalent Pm atoms to form PmPm8Ho4 cuboctahedra that share corners with four equivalent HoPm12 cuboctahedra, corners with fourteen equivalent PmPm8Ho4 cuboctahedra, edges with six equivalent HoPm12 cuboctahedra, edges with twelve equivalent PmPm8Ho4 cuboctahedra, faces with four equivalent HoPm12 cuboctahedra, and faces with sixteen equivalent PmPm8Ho4 cuboctahedra. There are a spread of Pm–Pm bond distances ranging from 3.63–3.67 Å.

36 MATERIALS SCIENCE↗

Materials Data on Pm3Cd by Materials Project

Pm3Cd is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Pm is bonded in a 12-coordinate geometry to eight equivalent Pm and four equivalent Cd atoms. There are a spread of Pm–Pm bond distances ranging from 3.40–3.73 Å. There are two shorter (3.41 Å) and two longer (3.57 Å) Pm–Cd bond lengths. Cd is bonded to twelve equivalent Pm atoms to form a mixture of corner and face-sharing CdPm12 cuboctahedra.

36 MATERIALS SCIENCE↗

Materials Data on PmPr by Materials Project

PmPr is Magnesium-derived structured and crystallizes in the trigonal P3m1 space group. The structure is three-dimensional. Pm is bonded to six equivalent Pm and six equivalent Pr atoms to form PmPm6Pr6 cuboctahedra that share corners with eighteen equivalent PmPm6Pr6 cuboctahedra, edges with six equivalent PmPm6Pr6 cuboctahedra, edges with twelve equivalent PrPm6Pr6 cuboctahedra, faces with eight equivalent PmPm6Pr6 cuboctahedra, and faces with twelve equivalent PrPm6Pr6 cuboctahedra. All Pm–Pm bond lengths are 3.70 Å. There are three shorter (3.70 Å) and three longer (3.71 Å) Pm–Pr bond lengths. Pr is bonded to six equivalent Pm and six equivalent Pr atoms to form PrPm6Pr6 cuboctahedra that share corners with eighteen equivalent PrPm6Pr6 cuboctahedra, edges with six equivalent PrPm6Pr6 cuboctahedra, edges with twelve equivalent PmPm6Pr6 cuboctahedra, faces with eight equivalent PrPm6Pr6 cuboctahedra, and faces with twelve equivalent PmPm6Pr6 cuboctahedra. All Pr–Pr bond lengths are 3.70 Å.

36 MATERIALS SCIENCE↗

Materials Data on Pm3Sm by Materials Project

SmPm3 is Magnesium-derived structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Sm is bonded to twelve equivalent Pm atoms to form SmPm12 cuboctahedra that share corners with six equivalent SmPm12 cuboctahedra, corners with twelve equivalent PmPm8Sm4 cuboctahedra, edges with eighteen equivalent PmPm8Sm4 cuboctahedra, faces with eight equivalent SmPm12 cuboctahedra, and faces with twelve equivalent PmPm8Sm4 cuboctahedra. All Sm–Pm bond lengths are 3.66 Å. Pm is bonded to four equivalent Sm and eight equivalent Pm atoms to form PmPm8Sm4 cuboctahedra that share corners with four equivalent SmPm12 cuboctahedra, corners with fourteen equivalent PmPm8Sm4 cuboctahedra, edges with six equivalent SmPm12 cuboctahedra, edges with twelve equivalent PmPm8Sm4 cuboctahedra, faces with four equivalent SmPm12 cuboctahedra, and faces with sixteen equivalent PmPm8Sm4 cuboctahedra. All Pm–Pm bond lengths are 3.66 Å.

36 MATERIALS SCIENCE↗

Materials Data on Pm3Nd by Materials Project

Pm3Nd is Magnesium-derived structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Pm is bonded to eight equivalent Pm and four equivalent Nd atoms to form PmPm8Nd4 cuboctahedra that share corners with four equivalent NdPm12 cuboctahedra, corners with fourteen equivalent PmPm8Nd4 cuboctahedra, edges with six equivalent NdPm12 cuboctahedra, edges with twelve equivalent PmPm8Nd4 cuboctahedra, faces with four equivalent NdPm12 cuboctahedra, and faces with sixteen equivalent PmPm8Nd4 cuboctahedra. There are two shorter (3.66 Å) and six longer (3.68 Å) Pm–Pm bond lengths. There are two shorter (3.67 Å) and two longer (3.68 Å) Pm–Nd bond lengths. Nd is bonded to twelve equivalent Pm atoms to form NdPm12 cuboctahedra that share corners with six equivalent NdPm12 cuboctahedra, corners with twelve equivalent PmPm8Nd4 cuboctahedra, edges with eighteen equivalent PmPm8Nd4 cuboctahedra, faces with eight equivalent NdPm12 cuboctahedra, and faces with twelve equivalent PmPm8Nd4 cuboctahedra.

36 MATERIALS SCIENCE↗

Materials Data on PmNp by Materials Project

NpPm is Magnesium-derived structured and crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. Np is bonded to six equivalent Np and six equivalent Pm atoms to form NpPm6Np6 cuboctahedra that share corners with eighteen equivalent NpPm6Np6 cuboctahedra, edges with six equivalent NpPm6Np6 cuboctahedra, edges with twelve equivalent PmPm6Np6 cuboctahedra, faces with eight equivalent NpPm6Np6 cuboctahedra, and faces with twelve equivalent PmPm6Np6 cuboctahedra. All Np–Np bond lengths are 3.37 Å. All Np–Pm bond lengths are 3.55 Å. Pm is bonded to six equivalent Np and six equivalent Pm atoms to form PmPm6Np6 cuboctahedra that share corners with eighteen equivalent PmPm6Np6 cuboctahedra, edges with six equivalent PmPm6Np6 cuboctahedra, edges with twelve equivalent NpPm6Np6 cuboctahedra, faces with eight equivalent PmPm6Np6 cuboctahedra, and faces with twelve equivalent NpPm6Np6 cuboctahedra. All Pm–Pm bond lengths are 3.37 Å.

36 MATERIALS SCIENCE↗

Materials Data on Pm3Tm by Materials Project

TmPm3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Tm is bonded to twelve equivalent Pm atoms to form TmPm12 cuboctahedra that share corners with six equivalent TmPm12 cuboctahedra, corners with twelve equivalent PmPm8Tm4 cuboctahedra, edges with eighteen equivalent PmPm8Tm4 cuboctahedra, faces with eight equivalent TmPm12 cuboctahedra, and faces with twelve equivalent PmPm8Tm4 cuboctahedra. There are six shorter (3.61 Å) and six longer (3.65 Å) Tm–Pm bond lengths. Pm is bonded to four equivalent Tm and eight equivalent Pm atoms to form PmPm8Tm4 cuboctahedra that share corners with four equivalent TmPm12 cuboctahedra, corners with fourteen equivalent PmPm8Tm4 cuboctahedra, edges with six equivalent TmPm12 cuboctahedra, edges with twelve equivalent PmPm8Tm4 cuboctahedra, faces with four equivalent TmPm12 cuboctahedra, and faces with sixteen equivalent PmPm8Tm4 cuboctahedra. There are a spread of Pm–Pm bond distances ranging from 3.62–3.67 Å.

36 MATERIALS SCIENCE↗

Materials Data on PmTm by Materials Project

TmPm crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. Tm is bonded to six equivalent Tm and six equivalent Pm atoms to form TmPm6Tm6 cuboctahedra that share corners with eighteen equivalent TmPm6Tm6 cuboctahedra, edges with six equivalent TmPm6Tm6 cuboctahedra, edges with twelve equivalent PmPm6Tm6 cuboctahedra, faces with eight equivalent TmPm6Tm6 cuboctahedra, and faces with twelve equivalent PmPm6Tm6 cuboctahedra. All Tm–Tm bond lengths are 3.61 Å. All Tm–Pm bond lengths are 3.57 Å. Pm is bonded to six equivalent Tm and six equivalent Pm atoms to form PmPm6Tm6 cuboctahedra that share corners with eighteen equivalent PmPm6Tm6 cuboctahedra, edges with six equivalent PmPm6Tm6 cuboctahedra, edges with twelve equivalent TmPm6Tm6 cuboctahedra, faces with eight equivalent PmPm6Tm6 cuboctahedra, and faces with twelve equivalent TmPm6Tm6 cuboctahedra. All Pm–Pm bond lengths are 3.61 Å.

36 MATERIALS SCIENCE↗

Materials Data on Pm3Dy by Materials Project

DyPm3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Dy is bonded to twelve equivalent Pm atoms to form DyPm12 cuboctahedra that share corners with six equivalent DyPm12 cuboctahedra, corners with twelve equivalent PmPm8Dy4 cuboctahedra, edges with eighteen equivalent PmPm8Dy4 cuboctahedra, faces with eight equivalent DyPm12 cuboctahedra, and faces with twelve equivalent PmPm8Dy4 cuboctahedra. There are six shorter (3.63 Å) and six longer (3.65 Å) Dy–Pm bond lengths. Pm is bonded to four equivalent Dy and eight equivalent Pm atoms to form PmPm8Dy4 cuboctahedra that share corners with four equivalent DyPm12 cuboctahedra, corners with fourteen equivalent PmPm8Dy4 cuboctahedra, edges with six equivalent DyPm12 cuboctahedra, edges with twelve equivalent PmPm8Dy4 cuboctahedra, faces with four equivalent DyPm12 cuboctahedra, and faces with sixteen equivalent PmPm8Dy4 cuboctahedra. There are six shorter (3.64 Å) and two longer (3.66 Å) Pm–Pm bond lengths.

36 MATERIALS SCIENCE↗

Materials Data on PmSm by Materials Project

SmPm is Magnesium-derived structured and crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. Sm is bonded to six equivalent Sm and six equivalent Pm atoms to form SmPm6Sm6 cuboctahedra that share corners with eighteen equivalent SmPm6Sm6 cuboctahedra, edges with six equivalent SmPm6Sm6 cuboctahedra, edges with twelve equivalent PmPm6Sm6 cuboctahedra, faces with eight equivalent SmPm6Sm6 cuboctahedra, and faces with twelve equivalent PmPm6Sm6 cuboctahedra. All Sm–Sm bond lengths are 3.65 Å. All Sm–Pm bond lengths are 3.66 Å. Pm is bonded to six equivalent Sm and six equivalent Pm atoms to form PmPm6Sm6 cuboctahedra that share corners with eighteen equivalent PmPm6Sm6 cuboctahedra, edges with six equivalent PmPm6Sm6 cuboctahedra, edges with twelve equivalent SmPm6Sm6 cuboctahedra, faces with eight equivalent PmPm6Sm6 cuboctahedra, and faces with twelve equivalent SmPm6Sm6 cuboctahedra. All Pm–Pm bond lengths are 3.65 Å.

36 MATERIALS SCIENCE↗

Materials Data on PmZr by Materials Project

PmZr crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. Pm is bonded to six equivalent Pm and six equivalent Zr atoms to form PmPm6Zr6 cuboctahedra that share corners with eighteen equivalent PmPm6Zr6 cuboctahedra, edges with six equivalent PmPm6Zr6 cuboctahedra, edges with twelve equivalent ZrPm6Zr6 cuboctahedra, faces with eight equivalent PmPm6Zr6 cuboctahedra, and faces with twelve equivalent ZrPm6Zr6 cuboctahedra. All Pm–Pm bond lengths are 3.40 Å. All Pm–Zr bond lengths are 3.41 Å. Zr is bonded to six equivalent Pm and six equivalent Zr atoms to form ZrPm6Zr6 cuboctahedra that share corners with eighteen equivalent ZrPm6Zr6 cuboctahedra, edges with six equivalent ZrPm6Zr6 cuboctahedra, edges with twelve equivalent PmPm6Zr6 cuboctahedra, faces with eight equivalent ZrPm6Zr6 cuboctahedra, and faces with twelve equivalent PmPm6Zr6 cuboctahedra. All Zr–Zr bond lengths are 3.40 Å.

36 MATERIALS SCIENCE↗

Materials Data on PmPa by Materials Project

PaPm crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. Pa is bonded to six equivalent Pa and six equivalent Pm atoms to form PaPm6Pa6 cuboctahedra that share corners with eighteen equivalent PaPm6Pa6 cuboctahedra, edges with six equivalent PaPm6Pa6 cuboctahedra, edges with twelve equivalent PmPm6Pa6 cuboctahedra, faces with eight equivalent PaPm6Pa6 cuboctahedra, and faces with twelve equivalent PmPm6Pa6 cuboctahedra. All Pa–Pa bond lengths are 3.32 Å. All Pa–Pm bond lengths are 3.54 Å. Pm is bonded to six equivalent Pa and six equivalent Pm atoms to form PmPm6Pa6 cuboctahedra that share corners with eighteen equivalent PmPm6Pa6 cuboctahedra, edges with six equivalent PmPm6Pa6 cuboctahedra, edges with twelve equivalent PaPm6Pa6 cuboctahedra, faces with eight equivalent PmPm6Pa6 cuboctahedra, and faces with twelve equivalent PaPm6Pa6 cuboctahedra. All Pm–Pm bond lengths are 3.32 Å.

36 MATERIALS SCIENCE↗