SEARCH · Engineering Papers
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.
Ta2OsRh crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two Ta2OsRh ribbons oriented in the (1, 0, 0) direction. Ta is bonded in a linear geometry to one Os and one Rh atom. The Ta–Os bond length is 2.28 Å. The Ta–Rh bond length is 2.34 Å. Os is bonded in a linear geometry to two equivalent Ta atoms. Rh is bonded in a linear geometry to two equivalent Ta atoms.
Ta2MoIr is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Ta is bonded in a body-centered cubic geometry to four equivalent Mo and four equivalent Ir atoms. All Ta–Mo bond lengths are 2.78 Å. All Ta–Ir bond lengths are 2.78 Å. Mo is bonded in a body-centered cubic geometry to eight equivalent Ta atoms. Ir is bonded in a body-centered cubic geometry to eight equivalent Ta atoms.
Ta2ReTc is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Ta is bonded in a body-centered cubic geometry to four equivalent Re and four equivalent Tc atoms. All Ta–Re bond lengths are 2.77 Å. All Ta–Tc bond lengths are 2.77 Å. Re is bonded in a body-centered cubic geometry to eight equivalent Ta atoms. Tc is bonded in a body-centered cubic geometry to eight equivalent Ta atoms.
TaNiB crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Ta is bonded in a 11-coordinate geometry to five equivalent Ni and six equivalent B atoms. There are one shorter (2.63 Å) and four longer (2.65 Å) Ta–Ni bond lengths. There are four shorter (2.40 Å) and two longer (2.42 Å) Ta–B bond lengths. Ni is bonded in a 10-coordinate geometry to five equivalent Ta, four equivalent Ni, and one B atom. All Ni–Ni bond lengths are 2.56 Å. The Ni–B bond length is 2.24 Å. B is bonded in a 9-coordinate geometry to six equivalent Ta, one Ni, and two equivalent B atoms. Both B–B bond lengths are 1.79 Å.
Ta2NbMo crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two Ta2NbMo ribbons oriented in the (1, 0, 0) direction. Ta is bonded in a linear geometry to one Nb and one Mo atom. The Ta–Nb bond length is 2.35 Å. The Ta–Mo bond length is 2.34 Å. Nb is bonded in a linear geometry to two equivalent Ta atoms. Mo is bonded in a linear geometry to two equivalent Ta atoms.
HfTaV4 is Hexagonal Laves-derived structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. Hf is bonded in a 12-coordinate geometry to four equivalent Ta and twelve equivalent V atoms. All Hf–Ta bond lengths are 3.12 Å. All Hf–V bond lengths are 2.99 Å. Ta is bonded in a 12-coordinate geometry to four equivalent Hf and twelve equivalent V atoms. All Ta–V bond lengths are 2.99 Å. V is bonded to three equivalent Hf, three equivalent Ta, and six equivalent V atoms to form a mixture of edge, face, and corner-sharing VHf3Ta3V6 cuboctahedra. All V–V bond lengths are 2.55 Å.
Pu3Ta is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Pu sites. In the first Pu site, Pu is bonded to eight Pu and four equivalent Ta atoms to form PuPu8Ta4 cuboctahedra that share corners with twelve equivalent PuPu8Ta4 cuboctahedra, edges with eight equivalent TaPu12 cuboctahedra, edges with sixteen PuPu8Ta4 cuboctahedra, faces with four equivalent TaPu12 cuboctahedra, and faces with fourteen PuPu8Ta4 cuboctahedra. There are four shorter (3.14 Å) and four longer (3.20 Å) Pu–Pu bond lengths. All Pu–Ta bond lengths are 3.14 Å. In the second Pu site, Pu is bonded to eight equivalent Pu and four equivalent Ta atoms to form PuPu8Ta4 cuboctahedra that share corners with four equivalent PuPu8Ta4 cuboctahedra, corners with eight equivalent TaPu12 cuboctahedra, edges with twenty-four PuPu8Ta4 cuboctahedra, faces with six equivalent TaPu12 cuboctahedra, and faces with twelve PuPu8Ta4 cuboctahedra. All Pu–Ta bond lengths are 3.20 Å. Ta is bonded to twelve Pu atoms to form TaPu12 cuboctahedra that share corners with four equivalent TaPu12 cuboctahedra, corners with eight equivalent PuPu8Ta4 cuboctahedra, edges with eight equivalent TaPu12 cuboctahedra, edges with sixteen equivalent PuPu8Ta4 cuboctahedra, faces with four equivalent TaPu12 cuboctahedra, and faces with fourteen PuPu8Ta4 cuboctahedra.
Sr3LaTaAl3O12 is (Cubic) Perovskite-derived structured and crystallizes in the orthorhombic Cmmm space group. The structure is three-dimensional. there are two inequivalent Sr sites. In the first Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share corners with four equivalent LaO12 cuboctahedra, corners with eight SrO12 cuboctahedra, faces with two equivalent LaO12 cuboctahedra, faces with four SrO12 cuboctahedra, faces with two equivalent TaO6 octahedra, and faces with six AlO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.68–2.84 Å. In the second Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share corners with four equivalent LaO12 cuboctahedra, corners with eight equivalent SrO12 cuboctahedra, faces with six SrO12 cuboctahedra, faces with two equivalent TaO6 octahedra, and faces with six AlO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.69–2.82 Å. La is bonded to twelve O atoms to form LaO12 cuboctahedra that share corners with twelve SrO12 cuboctahedra, faces with two equivalent LaO12 cuboctahedra, faces with four equivalent SrO12 cuboctahedra, faces with two equivalent TaO6 octahedra, and faces with six AlO6 octahedra. There are a spread of La–O bond distances ranging from 2.63–2.80 Å. Ta is bonded to six O atoms to form TaO6 octahedra that share corners with six AlO6 octahedra, faces with two equivalent LaO12 cuboctahedra, and faces with six SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 1–4°. There is two shorter (1.96 Å) and four longer (1.99 Å) Ta–O bond length. There are three inequivalent Al sites. In the first Al site, Al is bonded to six O atoms to form AlO6 octahedra that share corners with two equivalent AlO6 octahedra, corners with four equivalent TaO6 octahedra, faces with two equivalent LaO12 cuboctahedra, and faces with six SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 1–4°. There is four shorter (1.90 Å) and two longer (1.95 Å) Al–O bond length. In the second Al site, Al is bonded to six O atoms to form AlO6 octahedra that share corners with two equivalent TaO6 octahedra, corners with four equivalent AlO6 octahedra, faces with two equivalent LaO12 cuboctahedra, and faces with six SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 1–5°. There is four shorter (1.91 Å) and two longer (1.95 Å) Al–O bond length. In the third Al site, Al is bonded to six O atoms to form AlO6 octahedra that share corners with six AlO6 octahedra, faces with two equivalent LaO12 cuboctahedra, and faces with six SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 1–5°. There are a spread of Al–O bond distances ranging from 1.92–1.97 Å. There are six inequivalent O sites. In the first O site, O is bonded in a distorted linear geometry to two equivalent Sr, two equivalent La, one Ta, and one Al atom. In the second O site, O is bonded to two equivalent Sr, two equivalent La, and two Al atoms to form distorted OSr2La2Al2 octahedra that share corners with two equivalent OSr4Al2 octahedra, edges with two equivalent OSr2La2Al2 octahedra, and faces with four OSr2La2Al2 octahedra. The corner-sharing octahedral tilt angles are 3°. In the third O site, O is bonded in a distorted linear geometry to four Sr, one Ta, and one Al atom. In the fourth O site, O is bonded to four Sr and two Al atoms to form distorted OSr4Al2 octahedra that share corners with two equivalent OSr2La2Al2 octahedra, edges with two equivalent OSr4Al2 octahedra, and faces with four OSr2La2Al2 octahedra. The corner-sharing octahedral tilt angles are 3°. In the fifth O site, O is bonded in a distorted linear geometry to three Sr, one La, one Ta, and one Al atom. In the sixth O site, O is bonded in a distorted linear geometry to three Sr, one La, and two Al atoms.
TaNi6Al is Uranium Silicide-derived structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Ta is bonded to twelve Ni atoms to form TaNi12 cuboctahedra that share corners with six equivalent TaNi12 cuboctahedra, corners with twelve equivalent NiTa2Al2Ni8 cuboctahedra, edges with eighteen NiTa2Al2Ni8 cuboctahedra, faces with two equivalent TaNi12 cuboctahedra, faces with six equivalent AlNi12 cuboctahedra, and faces with twelve NiTa2Al2Ni8 cuboctahedra. There are six shorter (2.56 Å) and six longer (2.58 Å) Ta–Ni bond lengths. There are three inequivalent Ni sites. In the first Ni site, Ni is bonded to two equivalent Ta, eight Ni, and two equivalent Al atoms to form distorted NiTa2Al2Ni8 cuboctahedra that share corners with twelve equivalent NiTa2Al2Ni8 cuboctahedra, edges with four equivalent TaNi12 cuboctahedra, edges with four equivalent AlNi12 cuboctahedra, edges with sixteen NiTa2Al2Ni8 cuboctahedra, faces with two equivalent TaNi12 cuboctahedra, faces with two equivalent AlNi12 cuboctahedra, and faces with fourteen NiTa2Al2Ni8 cuboctahedra. There are a spread of Ni–Ni bond distances ranging from 2.46–2.66 Å. Both Ni–Al bond lengths are 2.56 Å. In the second Ni site, Ni is bonded to two equivalent Ta, eight Ni, and two equivalent Al atoms to form distorted NiTa2Al2Ni8 cuboctahedra that share corners with twelve equivalent NiTa2Al2Ni8 cuboctahedra, edges with four equivalent TaNi12 cuboctahedra, edges with four equivalent AlNi12 cuboctahedra, edges with sixteen NiTa2Al2Ni8 cuboctahedra, faces with two equivalent TaNi12 cuboctahedra, faces with two equivalent AlNi12 cuboctahedra, and faces with fourteen NiTa2Al2Ni8 cuboctahedra. All Ni–Ni bond lengths are 2.53 Å. Both Ni–Al bond lengths are 2.56 Å. In the third Ni site, Ni is bonded to two equivalent Ta, eight Ni, and two equivalent Al atoms to form distorted NiTa2Al2Ni8 cuboctahedra that share corners with four equivalent TaNi12 cuboctahedra, corners with fourteen equivalent NiTa2Al2Ni8 cuboctahedra, edges with two equivalent TaNi12 cuboctahedra, edges with four equivalent AlNi12 cuboctahedra, edges with twelve NiTa2Al2Ni8 cuboctahedra, faces with two equivalent TaNi12 cuboctahedra, faces with two equivalent AlNi12 cuboctahedra, and faces with sixteen NiTa2Al2Ni8 cuboctahedra. All Ni–Ni bond lengths are 2.56 Å. Both Ni–Al bond lengths are 2.55 Å. Al is bonded to twelve Ni atoms to form AlNi12 cuboctahedra that share corners with twelve equivalent AlNi12 cuboctahedra, edges with twenty-four NiTa2Al2Ni8 cuboctahedra, faces with six equivalent TaNi12 cuboctahedra, and faces with twelve NiTa2Al2Ni8 cuboctahedra.
ZrTaCr4 is Hexagonal Laves-derived structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. Zr is bonded in a 12-coordinate geometry to four equivalent Ta and twelve equivalent Cr atoms. All Zr–Ta bond lengths are 3.05 Å. All Zr–Cr bond lengths are 2.92 Å. Ta is bonded in a 12-coordinate geometry to four equivalent Zr and twelve equivalent Cr atoms. All Ta–Cr bond lengths are 2.92 Å. Cr is bonded to three equivalent Zr, three equivalent Ta, and six equivalent Cr atoms to form a mixture of corner, edge, and face-sharing CrZr3Ta3Cr6 cuboctahedra. All Cr–Cr bond lengths are 2.49 Å.
Ta2OsRu crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two Ta2OsRu ribbons oriented in the (1, 0, 0) direction. Ta is bonded in a linear geometry to one Os and one Ru atom. The Ta–Os bond length is 2.30 Å. The Ta–Ru bond length is 2.27 Å. Os is bonded in a linear geometry to two equivalent Ta atoms. Ru is bonded in a linear geometry to two equivalent Ta atoms.
TaRhSn is half-Heusler structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. Ta is bonded to four equivalent Rh and six equivalent Sn atoms to form a mixture of distorted face and corner-sharing TaSn6Rh4 tetrahedra. All Ta–Rh bond lengths are 2.69 Å. All Ta–Sn bond lengths are 3.10 Å. Rh is bonded in a body-centered cubic geometry to four equivalent Ta and four equivalent Sn atoms. All Rh–Sn bond lengths are 2.69 Å. Sn is bonded in a 4-coordinate geometry to six equivalent Ta and four equivalent Rh atoms.
Ta2TcOs is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Ta is bonded in a body-centered cubic geometry to four equivalent Tc and four equivalent Os atoms. All Ta–Tc bond lengths are 2.76 Å. All Ta–Os bond lengths are 2.76 Å. Tc is bonded in a body-centered cubic geometry to eight equivalent Ta atoms. Os is bonded in a body-centered cubic geometry to eight equivalent Ta atoms.
TaRuP is half-Heusler structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. Ta is bonded in a body-centered cubic geometry to four equivalent Ru and four equivalent P atoms. All Ta–Ru bond lengths are 2.58 Å. All Ta–P bond lengths are 2.58 Å. Ru is bonded to four equivalent Ta atoms to form RuTa4 tetrahedra that share corners with four equivalent PTa4 tetrahedra, corners with twelve equivalent RuTa4 tetrahedra, and edges with six equivalent PTa4 tetrahedra. P is bonded to four equivalent Ta atoms to form PTa4 tetrahedra that share corners with four equivalent RuTa4 tetrahedra, corners with twelve equivalent PTa4 tetrahedra, and edges with six equivalent RuTa4 tetrahedra.
Ta2RePt crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two Ta2RePt ribbons oriented in the (1, 0, 0) direction. Ta is bonded in a linear geometry to one Re and one Pt atom. The Ta–Re bond length is 2.31 Å. The Ta–Pt bond length is 2.49 Å. Re is bonded in a linear geometry to two equivalent Ta atoms. Pt is bonded in a linear geometry to two equivalent Ta atoms.
Ta2RuFe is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Ta is bonded in a body-centered cubic geometry to four equivalent Ru and four equivalent Fe atoms. All Ta–Ru bond lengths are 2.72 Å. All Ta–Fe bond lengths are 2.72 Å. Ru is bonded in a body-centered cubic geometry to eight equivalent Ta atoms. Fe is bonded in a distorted body-centered cubic geometry to eight equivalent Ta atoms.
TaRhP crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Ta is bonded in a 11-coordinate geometry to six equivalent Rh and five equivalent P atoms. There are a spread of Ta–Rh bond distances ranging from 2.87–2.96 Å. There are a spread of Ta–P bond distances ranging from 2.57–2.74 Å. Rh is bonded in a 12-coordinate geometry to six equivalent Ta and four equivalent P atoms. There are a spread of Rh–P bond distances ranging from 2.35–2.48 Å. P is bonded in a 9-coordinate geometry to five equivalent Ta and four equivalent Rh atoms.
Ta2CrMn crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two Ta2CrMn ribbons oriented in the (1, 0, 0) direction. Ta is bonded in a linear geometry to one Cr and one Mn atom. The Ta–Cr bond length is 2.55 Å. The Ta–Mn bond length is 2.26 Å. Cr is bonded in a linear geometry to two equivalent Ta atoms. Mn is bonded in a linear geometry to two equivalent Ta atoms.