Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Ir”

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 1,423 records · Page 79

Materials Data on YIr by Materials Project

IrY is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Y is bonded in a body-centered cubic geometry to eight equivalent Ir atoms. All Y–Ir bond lengths are 2.98 Å. Ir is bonded in a body-centered cubic geometry to eight equivalent Y atoms.

36 MATERIALS SCIENCE↗

Materials Data on Sn4Ir by Materials Project

IrSn4 crystallizes in the tetragonal I4_1/acd space group. The structure is two-dimensional and consists of four IrSn4 sheets oriented in the (0, 0, 1) direction. Ir is bonded in a 8-coordinate geometry to eight equivalent Sn atoms. There are four shorter (2.78 Å) and four longer (2.79 Å) Ir–Sn bond lengths. Sn is bonded in a 2-coordinate geometry to two equivalent Ir atoms.

36 MATERIALS SCIENCE↗

Materials Data on Cr3IrN by Materials Project

Cr3IrN is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Cr is bonded in a linear geometry to four equivalent Ir and two equivalent N atoms. All Cr–Ir bond lengths are 2.70 Å. Both Cr–N bond lengths are 1.91 Å. Ir is bonded to twelve equivalent Cr atoms to form IrCr12 cuboctahedra that share corners with twelve equivalent IrCr12 cuboctahedra, faces with six equivalent IrCr12 cuboctahedra, and faces with eight equivalent NCr6 octahedra. N is bonded to six equivalent Cr atoms to form NCr6 octahedra that share corners with six equivalent NCr6 octahedra and faces with eight equivalent IrCr12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°.

36 MATERIALS SCIENCE↗

Materials Data on GdIr3 by Materials Project

GdIr3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Gd is bonded to twelve equivalent Ir atoms to form a mixture of corner and face-sharing GdIr12 cuboctahedra. All Gd–Ir bond lengths are 2.88 Å. Ir is bonded in a distorted square co-planar geometry to four equivalent Gd atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ba3YIr2O9 by Materials Project

Ba3YIr2O9 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional and consists of two Ir2O3 clusters and one Ba3YO6 framework. In each Ir2O3 cluster, Ir+4.50+ is bonded in a 3-coordinate geometry to three equivalent O2- atoms. All Ir–O bond lengths are 1.98 Å. O2- is bonded in an L-shaped geometry to two equivalent Ir+4.50+ atoms. In the Ba3YO6 framework, there are two inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded in a 6-coordinate geometry to six equivalent O2- atoms. All Ba–O bond lengths are 2.75 Å. In the second Ba2+ site, Ba2+ is bonded in a trigonal planar geometry to three equivalent O2- atoms. All Ba–O bond lengths are 2.38 Å. Y3+ is bonded in a distorted octahedral geometry to six equivalent O2- atoms. All Y–O bond lengths are 2.26 Å. O2- is bonded in a 3-coordinate geometry to two Ba2+ and one Y3+ atom.

36 MATERIALS SCIENCE↗

Materials Data on Ba3SmIr2O9 by Materials Project

Ba3SmIr2O9 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional and consists of two Ir2O3 clusters and one Ba3SmO6 framework. In each Ir2O3 cluster, Ir+4.50+ is bonded in a 3-coordinate geometry to three equivalent O2- atoms. All Ir–O bond lengths are 1.98 Å. O2- is bonded in a distorted L-shaped geometry to two equivalent Ir+4.50+ atoms. In the Ba3SmO6 framework, there are two inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded in a 6-coordinate geometry to six equivalent O2- atoms. All Ba–O bond lengths are 2.75 Å. In the second Ba2+ site, Ba2+ is bonded in a distorted trigonal planar geometry to three equivalent O2- atoms. All Ba–O bond lengths are 2.38 Å. Sm3+ is bonded in a distorted octahedral geometry to six equivalent O2- atoms. All Sm–O bond lengths are 2.31 Å. O2- is bonded in a 3-coordinate geometry to two Ba2+ and one Sm3+ atom.

36 MATERIALS SCIENCE↗

Materials Data on Ti3Ir by Materials Project

Ti3Ir crystallizes in the cubic Pm-3n space group. The structure is three-dimensional. Ti is bonded in a 6-coordinate geometry to two equivalent Ti and four equivalent Ir atoms. Both Ti–Ti bond lengths are 2.51 Å. All Ti–Ir bond lengths are 2.80 Å. Ir is bonded to twelve equivalent Ti atoms to form a mixture of edge and face-sharing IrTi12 cuboctahedra.

36 MATERIALS SCIENCE↗

Materials Data on P3IrO9 by Materials Project

IrP3O9 crystallizes in the monoclinic Cc space group. The structure is three-dimensional. there are three inequivalent Ir3+ sites. In the first Ir3+ site, Ir3+ is bonded to six O2- atoms to form IrO6 octahedra that share corners with six PO4 tetrahedra. There are a spread of Ir–O bond distances ranging from 2.04–2.06 Å. In the second Ir3+ site, Ir3+ is bonded to six O2- atoms to form IrO6 octahedra that share corners with six PO4 tetrahedra. There are a spread of Ir–O bond distances ranging from 2.03–2.07 Å. In the third Ir3+ site, Ir3+ is bonded to six O2- atoms to form IrO6 octahedra that share corners with six PO4 tetrahedra. There are a spread of Ir–O bond distances ranging from 2.05–2.07 Å. There are nine inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two IrO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 37–43°. There are a spread of P–O bond distances ranging from 1.50–1.60 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two IrO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 46–50°. There are a spread of P–O bond distances ranging from 1.51–1.61 Å. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two IrO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 42–45°. There are a spread of P–O bond distances ranging from 1.50–1.60 Å. In the fourth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two IrO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 41–43°. There are a spread of P–O bond distances ranging from 1.50–1.60 Å. In the fifth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two IrO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 36–49°. There are a spread of P–O bond distances ranging from 1.50–1.62 Å. In the sixth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent IrO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 39–41°. There is two shorter (1.50 Å) and two longer (1.60 Å) P–O bond length. In the seventh P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent IrO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 37–41°. There are a spread of P–O bond distances ranging from 1.50–1.61 Å. In the eighth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent IrO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 46–49°. There is two shorter (1.51 Å) and two longer (1.60 Å) P–O bond length. In the ninth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two IrO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 31–45°. There are a spread of P–O bond distances ranging from 1.50–1.60 Å. There are twenty-seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to one Ir3+ and one P5+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to one Ir3+ and one P5+ atom. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to two P5+ atoms. In the fourth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ir3+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to one Ir3+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Ir3+ and one P5+ atom. In the seventh O2- site, O2- is bonded in a bent 150 degrees geometry to two P5+ atoms. In the eighth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Ir3+ and one P5+ atom. In the ninth O2- site, O2- is bonded in a bent 150 degrees geometry to two P5+ atoms. In the tenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Ir3+ and one P5+ atom. In the eleventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Ir3+ and one P5+ atom. In the twelfth O2- site, O2- is bonded in a 2-coordinate geometry to one Ir3+ and one P5+ atom. In the thirteenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Ir3+ and one P5+ atom. In the fourteenth O2- site, O2- is bonded in a bent 150 degrees geometry to two P5+ atoms. In the fifteenth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ir3+ and one P5+ atom. In the sixteenth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ir3+ and one P5+ atom. In the seventeenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Ir3+ and one P5+ atom. In the eighteenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Ir3+ and one P5+ atom. In the nineteenth O2- site, O2- is bonded in a bent 150 degrees geometry to two P5+ atoms. In the twentieth O2- site, O2- is bonded in a bent 150 degrees geometry to two P5+ atoms. In the twenty-first O2- site, O2- is bonded in a 2-coordinate geometry to one Ir3+ and one P5+ atom. In the twenty-second O2- site, O2- is bonded in a bent 150 degrees geometry to two P5+ atoms. In the twenty-third O2- site, O2- is bonded in a bent 150 degrees geometry to two P5+ atoms. In the twenty-fourth O2- site, O2- is bonded in a bent 150 degrees geometry to two P5+ atoms. In the twenty-fifth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Ir3+ and one P5+ atom. In the twenty-sixth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Ir3+ and one P5+ atom. In the twenty-seventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Ir3+ and one P5+ atom.

36 MATERIALS SCIENCE↗

Materials Data on K2Sm2IrO7 by Materials Project

K2Sm2IrO7 crystallizes in the trigonal R-3c space group. The structure is three-dimensional. K is bonded in a 9-coordinate geometry to six equivalent O atoms. There are three shorter (2.68 Å) and three longer (2.82 Å) K–O bond lengths. Sm is bonded in a 7-coordinate geometry to seven O atoms. There are a spread of Sm–O bond distances ranging from 2.24–2.66 Å. Ir is bonded in an octahedral geometry to six equivalent O atoms. All Ir–O bond lengths are 1.96 Å. There are two inequivalent O sites. In the first O site, O is bonded in a linear geometry to two equivalent Sm atoms. In the second O site, O is bonded in a 5-coordinate geometry to two equivalent K, two equivalent Sm, and one Ir atom.

36 MATERIALS SCIENCE↗

Materials Data on K2Nd2IrO7 by Materials Project

K2Nd2IrO7 crystallizes in the trigonal R-3c space group. The structure is three-dimensional. K is bonded in a 6-coordinate geometry to six equivalent O atoms. There are three shorter (2.70 Å) and three longer (2.83 Å) K–O bond lengths. Nd is bonded in a 7-coordinate geometry to seven O atoms. There are a spread of Nd–O bond distances ranging from 2.27–2.67 Å. Ir is bonded in an octahedral geometry to six equivalent O atoms. All Ir–O bond lengths are 1.96 Å. There are two inequivalent O sites. In the first O site, O is bonded in a linear geometry to two equivalent Nd atoms. In the second O site, O is bonded in a 5-coordinate geometry to two equivalent K, two equivalent Nd, and one Ir atom.

36 MATERIALS SCIENCE↗

Materials Data on Sm2CdIr by Materials Project

Sm2IrCd is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Sm is bonded in a body-centered cubic geometry to four equivalent Ir and four equivalent Cd atoms. All Sm–Ir bond lengths are 3.15 Å. All Sm–Cd bond lengths are 3.15 Å. Ir is bonded in a body-centered cubic geometry to eight equivalent Sm atoms. Cd is bonded in a body-centered cubic geometry to eight equivalent Sm atoms.

36 MATERIALS SCIENCE↗

Materials Data on Pr2IrAu by Materials Project

Pr2IrAu is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Pr is bonded in a body-centered cubic geometry to four equivalent Ir and four equivalent Au atoms. All Pr–Ir bond lengths are 3.17 Å. All Pr–Au bond lengths are 3.17 Å. Ir is bonded in a body-centered cubic geometry to eight equivalent Pr atoms. Au is bonded in a body-centered cubic geometry to eight equivalent Pr atoms.

36 MATERIALS SCIENCE↗

Materials Data on Li2InIr by Materials Project

Li2IrIn is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Li is bonded in a body-centered cubic geometry to four equivalent Ir and four equivalent In atoms. All Li–Ir bond lengths are 2.66 Å. All Li–In bond lengths are 2.66 Å. Ir is bonded in a body-centered cubic geometry to eight equivalent Li atoms. In is bonded in a body-centered cubic geometry to eight equivalent Li atoms.

36 MATERIALS SCIENCE↗

Materials Data on HfIr by Materials Project

HfIr is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Hf is bonded in a body-centered cubic geometry to eight equivalent Ir atoms. All Hf–Ir bond lengths are 2.84 Å. Ir is bonded in a body-centered cubic geometry to eight equivalent Hf atoms.

36 MATERIALS SCIENCE↗

Materials Data on YbIr by Materials Project

YbIr is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Yb is bonded in a body-centered cubic geometry to eight equivalent Ir atoms. All Yb–Ir bond lengths are 2.91 Å. Ir is bonded in a body-centered cubic geometry to eight equivalent Yb atoms.

36 MATERIALS SCIENCE↗

Materials Data on VIr by Materials Project

IrV is alpha iridium vanadium structured and crystallizes in the orthorhombic Cmmm space group. The structure is three-dimensional. V is bonded in a 9-coordinate geometry to one V and eight equivalent Ir atoms. The V–V bond length is 2.38 Å. All V–Ir bond lengths are 2.66 Å. Ir is bonded in a 8-coordinate geometry to eight equivalent V atoms.

36 MATERIALS SCIENCE↗

Materials Data on Li2GaIr by Materials Project

Li2IrGa is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Li is bonded in a body-centered cubic geometry to four equivalent Ir and four equivalent Ga atoms. All Li–Ir bond lengths are 2.55 Å. All Li–Ga bond lengths are 2.55 Å. Ir is bonded in a body-centered cubic geometry to eight equivalent Li atoms. Ga is bonded in a body-centered cubic geometry to eight equivalent Li atoms.

36 MATERIALS SCIENCE↗

Materials Data on LaB2Ir2C by Materials Project

LaIr2B2C crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. La3+ is bonded in a square co-planar geometry to four equivalent C4- atoms. All La–C bond lengths are 2.75 Å. Ir+3.50+ is bonded to four equivalent B3- atoms to form a mixture of edge and corner-sharing IrB4 tetrahedra. All Ir–B bond lengths are 2.24 Å. B3- is bonded in a distorted single-bond geometry to four equivalent Ir+3.50+ and one C4- atom. The B–C bond length is 1.52 Å. C4- is bonded in a distorted linear geometry to four equivalent La3+ and two equivalent B3- atoms.

36 MATERIALS SCIENCE↗