SEARCH · Search NASA
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.
AlNd is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Nd is bonded in a body-centered cubic geometry to eight equivalent Al atoms. All Nd–Al bond lengths are 3.23 Å. Al is bonded in a body-centered cubic geometry to eight equivalent Nd atoms.
Al3Nd crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Nd is bonded to twelve equivalent Al atoms to form a mixture of distorted face and corner-sharing NdAl12 cuboctahedra. There are six shorter (3.17 Å) and six longer (3.25 Å) Nd–Al bond lengths. Al is bonded in a 10-coordinate geometry to four equivalent Nd and six equivalent Al atoms. There are two shorter (2.75 Å) and four longer (2.82 Å) Al–Al bond lengths.
Al2Nd is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Nd is bonded in a 12-coordinate geometry to four equivalent Nd and twelve equivalent Al atoms. All Nd–Nd bond lengths are 3.48 Å. All Nd–Al bond lengths are 3.33 Å. Al is bonded to six equivalent Nd and six equivalent Al atoms to form a mixture of face, edge, and corner-sharing AlNd6Al6 cuboctahedra. All Al–Al bond lengths are 2.84 Å.
AlNd2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Nd is bonded to six equivalent Nd and six equivalent Al atoms to form a mixture of face, edge, and corner-sharing NdNd6Al6 cuboctahedra. All Nd–Nd bond lengths are 3.18 Å. All Nd–Al bond lengths are 3.73 Å. Al is bonded in a 12-coordinate geometry to twelve equivalent Nd atoms.
AlNd crystallizes in the orthorhombic Pbcm space group. The structure is three-dimensional. there are two inequivalent Nd sites. In the first Nd site, Nd is bonded in a 2-coordinate geometry to eight Al atoms. There are a spread of Nd–Al bond distances ranging from 3.16–3.47 Å. In the second Nd site, Nd is bonded in a 6-coordinate geometry to eight Al atoms. There are a spread of Nd–Al bond distances ranging from 3.16–3.59 Å. There are two inequivalent Al sites. In the first Al site, Al is bonded in a 10-coordinate geometry to eight Nd and two equivalent Al atoms. Both Al–Al bond lengths are 2.76 Å. In the second Al site, Al is bonded to eight Nd and four Al atoms to form a mixture of distorted face, edge, and corner-sharing AlNd8Al4 cuboctahedra. Both Al–Al bond lengths are 2.88 Å.
Nd3Al is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Nd is bonded to eight equivalent Nd and four equivalent Al atoms to form distorted NdNd8Al4 cuboctahedra that share corners with twelve equivalent NdNd8Al4 cuboctahedra, edges with eight equivalent AlNd12 cuboctahedra, edges with sixteen equivalent NdNd8Al4 cuboctahedra, faces with four equivalent AlNd12 cuboctahedra, and faces with fourteen equivalent NdNd8Al4 cuboctahedra. All Nd–Nd bond lengths are 3.47 Å. All Nd–Al bond lengths are 3.47 Å. Al is bonded to twelve equivalent Nd atoms to form AlNd12 cuboctahedra that share corners with twelve equivalent AlNd12 cuboctahedra, edges with twenty-four equivalent NdNd8Al4 cuboctahedra, faces with six equivalent AlNd12 cuboctahedra, and faces with twelve equivalent NdNd8Al4 cuboctahedra.
Nd4Al is Iron carbide-like structured and crystallizes in the cubic Fd-3m space group. The structure is zero-dimensional and consists of eight Nd4Al clusters. Nd is bonded in a single-bond geometry to one Al atom. The Nd–Al bond length is 2.84 Å. Al is bonded in a tetrahedral geometry to four equivalent Nd atoms.
Nd3Al is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Nd is bonded in a 12-coordinate geometry to eight equivalent Nd and four equivalent Al atoms. There are a spread of Nd–Nd bond distances ranging from 3.30–3.79 Å. There are two shorter (3.32 Å) and two longer (3.55 Å) Nd–Al bond lengths. Al is bonded to twelve equivalent Nd atoms to form a mixture of face and corner-sharing AlNd12 cuboctahedra.
Al11Nd3 crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. there are two inequivalent Nd sites. In the first Nd site, Nd is bonded to sixteen Al atoms to form distorted NdAl16 cuboctahedra that share corners with four equivalent AlNd4Al8 cuboctahedra, faces with two equivalent NdAl16 cuboctahedra, and faces with six AlNd4Al8 cuboctahedra. There are a spread of Nd–Al bond distances ranging from 3.29–3.59 Å. In the second Nd site, Nd is bonded in a 12-coordinate geometry to fourteen Al atoms. There are a spread of Nd–Al bond distances ranging from 3.20–3.62 Å. There are four inequivalent Al sites. In the first Al site, Al is bonded to four equivalent Nd and eight Al atoms to form distorted AlNd4Al8 cuboctahedra that share corners with four equivalent NdAl16 cuboctahedra, faces with two equivalent NdAl16 cuboctahedra, and faces with six AlNd4Al8 cuboctahedra. There are four shorter (2.89 Å) and four longer (3.08 Å) Al–Al bond lengths. In the second Al site, Al is bonded to four Nd and eight Al atoms to form distorted AlNd4Al8 cuboctahedra that share corners with four equivalent AlNd4Al8 cuboctahedra, an edgeedge with one AlNd4Al8 cuboctahedra, faces with two equivalent NdAl16 cuboctahedra, and faces with five AlNd4Al8 cuboctahedra. There are two shorter (2.65 Å) and four longer (2.82 Å) Al–Al bond lengths. In the third Al site, Al is bonded in a 9-coordinate geometry to four Nd and five Al atoms. There are a spread of Al–Al bond distances ranging from 2.63–2.73 Å. In the fourth Al site, Al is bonded in a 10-coordinate geometry to four Nd and six Al atoms.