Search NASA⌕ Search

SEARCH · Search NASA

Results for “PN ranging”

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 37 records · Page 2
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on CuW3Cl7 by Materials Project

W3CuCl7 crystallizes in the cubic Pn-3 space group. The structure is three-dimensional. W2+ is bonded to five Cl1- atoms to form edge-sharing WCl5 square pyramids. There are a spread of W–Cl bond distances ranging from 2.49–2.52 Å. Cu1+ is bonded in a trigonal planar geometry to three equivalent Cl1- atoms. All Cu–Cl bond lengths are 2.26 Å. There are three inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 3-coordinate geometry to three equivalent W2+ atoms. In the second Cl1- site, Cl1- is bonded in a bent 120 degrees geometry to one W2+ and one Cu1+ atom. In the third Cl1- site, Cl1- is bonded in a 12-coordinate geometry to three equivalent W2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CuMo3Cl7 by Materials Project

Mo3CuCl7 crystallizes in the cubic Pn-3 space group. The structure is three-dimensional. Mo2+ is bonded to five Cl1- atoms to form edge-sharing MoCl5 square pyramids. There are a spread of Mo–Cl bond distances ranging from 2.48–2.50 Å. Cu1+ is bonded in a trigonal planar geometry to three equivalent Cl1- atoms. All Cu–Cl bond lengths are 2.26 Å. There are three inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 3-coordinate geometry to three equivalent Mo2+ atoms. In the second Cl1- site, Cl1- is bonded in a 3-coordinate geometry to three equivalent Mo2+ atoms. In the third Cl1- site, Cl1- is bonded in a bent 120 degrees geometry to one Mo2+ and one Cu1+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CuMo3Br7 by Materials Project

Mo3CuBr7 crystallizes in the cubic Pn-3 space group. The structure is three-dimensional. Mo2+ is bonded to five Br1- atoms to form edge-sharing MoBr5 square pyramids. There are a spread of Mo–Br bond distances ranging from 2.62–2.66 Å. Cu1+ is bonded in a trigonal planar geometry to three equivalent Br1- atoms. All Cu–Br bond lengths are 2.40 Å. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 12-coordinate geometry to three equivalent Mo2+ atoms. In the second Br1- site, Br1- is bonded in a bent 120 degrees geometry to one Mo2+ and one Cu1+ atom. In the third Br1- site, Br1- is bonded in a 12-coordinate geometry to three equivalent Mo2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2023

New Trick for an Old Dog: From Prediction to Properties of “Hidden Clathrates” Ba 2 Zn 5 As 6 and Ba 2 Zn 5 Sb 6

The zinc–antimony phase space has been heavily investigated due to the structural complexity and abundance of high-performing thermoelectric materials. Consequentially, the desire to use zinc and antimony as framework elements to encage rattling cations and achieve phonon-glass-electron-crystal-type properties has remained an enticing goal with only two alkali metal clathrates to date, Cs 8 Zn 18 Sb 28 and K 58 Zn 122 Sb 207 . Guided by Zintl electron-counting predictions, here we explored the Ba–Zn–Pn (Pn = As, Sb) phase space proximal to the expected composition of the type-I clathrate. In situ powder X-ray diffraction studies revealed two “hidden” compounds which can only be synthesized in a narrow temperature range. The ex situ synthesis and crystal growth unveiled that instead of type-I clathrates, compositionally close but structurally different new clathrate-like compounds formed, Ba 2 Zn 5 As 6 and Ba 2 Zn 5 Sb 6 . These materials crystallize in a unique structure, in the orthorhombic space group Pmna with the Wyckoff sequence i 2 h 6 gfe. Single-phase synthesis enabled the exploration of their transport properties. Rattling of the Ba cations in oversized cages manifested low thermal conductivity, which, coupled with the high Seebeck coefficients observed, are prerequisites for a promising thermoelectric material. Potential for further optimization of the thermoelectric performance by aliovalent doping was computationally analyzed.

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗
DOE OSTI2020

Materials Data on W3Br7 by Materials Project

W3Br7 is Copper structured and crystallizes in the cubic Pn-3 space group. The structure is zero-dimensional and consists of four W3Br7 clusters. W+2.33+ is bonded to five Br1- atoms to form edge-sharing WBr5 square pyramids. There are a spread of W–Br bond distances ranging from 2.55–2.66 Å. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 6-coordinate geometry to three equivalent W+2.33+ atoms. In the second Br1- site, Br1- is bonded in a 12-coordinate geometry to three equivalent W+2.33+ atoms. In the third Br1- site, Br1- is bonded in a single-bond geometry to one W+2.33+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2025

Magnetic Properties Tuning via Broad Range Site Deficiency in Square Net Material UCu x Bi 2

HfCuSi 2 -type pnictogen compounds have recently been shown to be a versatile platform for designing materials with topologically nontrivial band structures. However, these phases require strict control over the electron count to tune the Fermi level, which can only be achieved in compositions with A 2+ M 2+ Pn 2 and A 3+ M + Pn 2 (A = lanthanides, M = transition metals, Pn = pnictogens P–Bi) charge distribution. While such lanthanide compounds have been thoroughly studied as candidate magnetic topological materials, their heavy element analogs with uranium and bismuth remain largely underexplored. In this report, we present the synthesis of UCu x Bi 2 single crystals and study their magnetic properties. Detailed structural analysis revealed that flux-grown crystals always form as a site-deficient UCu x Bi 2 composition, where x varies between 0.20 and 0.64. Magnetic property measurements revealed a dependence of the magnetic coupling on the Cu site deficiency, linearly changing the Néel temperature from 51 K for UCu 0.60 Bi 2 to 118 K for UCu 0.30 Bi 2 . Moreover, higher Cu concentration promotes a metamagnetic transition in highly magnetically anisotropic UCu 0.60 Bi 2 single crystals. We show that DFT calculations can successfully model site deficiency in the UCu x Sb 2 and UCu x Bi 2 systems. This work paves the way toward using the site deficiency to tune the Fermi level in more ubiquitous A 3+ M 2+ x Pn 2 phases, which previously have not been considered topological candidate materials due to unfavorable electron count.

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗
DOE OSTI2020

Materials Data on La3Ru3O11 by Materials Project

La3Ru3O11 crystallizes in the cubic Pn-3 space group. The structure is three-dimensional. there are two inequivalent La3+ sites. In the first La3+ site, La3+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of La–O bond distances ranging from 2.34–2.92 Å. In the second La3+ site, La3+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are two shorter (2.40 Å) and six longer (2.56 Å) La–O bond lengths. Ru+4.33+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing RuO6 octahedra. The corner-sharing octahedral tilt angles are 56°. There are a spread of Ru–O bond distances ranging from 1.96–2.03 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded to four La3+ atoms to form OLa4 tetrahedra that share a cornercorner with one OLa4 tetrahedra, corners with nine equivalent OLa2Ru2 trigonal pyramids, edges with three equivalent OLa4 tetrahedra, and edges with three equivalent OLa2Ru2 trigonal pyramids. In the second O2- site, O2- is bonded in a distorted water-like geometry to two equivalent La3+ and two equivalent Ru+4.33+ atoms. In the third O2- site, O2- is bonded to two La3+ and two equivalent Ru+4.33+ atoms to form distorted OLa2Ru2 trigonal pyramids that share corners with three equivalent OLa4 tetrahedra, corners with nine equivalent OLa2Ru2 trigonal pyramids, an edgeedge with one OLa4 tetrahedra, and edges with two equivalent OLa2Ru2 trigonal pyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Y4CdMo3O16 by Materials Project

Y4CdMo3O16 crystallizes in the cubic Pn-3 space group. The structure is three-dimensional. there are two inequivalent Y3+ sites. In the first Y3+ site, Y3+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are a spread of Y–O bond distances ranging from 2.30–2.53 Å. In the second Y3+ site, Y3+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are two shorter (2.28 Å) and six longer (2.48 Å) Y–O bond lengths. Mo6+ is bonded in a tetrahedral geometry to four O2- atoms. There is two shorter (1.79 Å) and two longer (1.82 Å) Mo–O bond length. Cd2+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are two shorter (2.26 Å) and six longer (2.61 Å) Cd–O bond lengths. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to two Y3+ and one Mo6+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to one Y3+, one Mo6+, and one Cd2+ atom. In the third O2- site, O2- is bonded to three equivalent Y3+ and one Cd2+ atom to form OY3Cd tetrahedra that share corners with four equivalent OY3Cd tetrahedra and edges with three equivalent OY4 tetrahedra. In the fourth O2- site, O2- is bonded to four Y3+ atoms to form OY4 tetrahedra that share corners with four equivalent OY4 tetrahedra and edges with three equivalent OY3Cd tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Bi3Ru3O11 by Materials Project

Bi3Ru3O11 crystallizes in the cubic Pn-3 space group. The structure is three-dimensional. Ru+4.33+ is bonded to six O2- atoms to form a mixture of corner and edge-sharing RuO6 octahedra. The corner-sharing octahedral tilt angles are 49°. There are a spread of Ru–O bond distances ranging from 1.98–2.02 Å. There are two inequivalent Bi3+ sites. In the first Bi3+ site, Bi3+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are two shorter (2.39 Å) and six longer (2.49 Å) Bi–O bond lengths. In the second Bi3+ site, Bi3+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Bi–O bond distances ranging from 2.26–2.81 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded to four Bi3+ atoms to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the second O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Ru+4.33+ and two Bi3+ atoms. In the third O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Ru+4.33+ and two equivalent Bi3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Bi3Pt3O11 by Materials Project

Pt3Bi3O11 crystallizes in the cubic Pn-3 space group. The structure is three-dimensional. Pt+4.33+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing PtO6 octahedra. The corner-sharing octahedral tilt angles are 55°. There are a spread of Pt–O bond distances ranging from 2.02–2.04 Å. There are two inequivalent Bi3+ sites. In the first Bi3+ site, Bi3+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Bi–O bond distances ranging from 2.28–2.77 Å. In the second Bi3+ site, Bi3+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are two shorter (2.43 Å) and six longer (2.48 Å) Bi–O bond lengths. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded to four Bi3+ atoms to form a mixture of edge and corner-sharing OBi4 tetrahedra. In the second O2- site, O2- is bonded in a distorted L-shaped geometry to two equivalent Pt+4.33+ and two equivalent Bi3+ atoms. In the third O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Pt+4.33+ and two Bi3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Bi3Ir3O11 by Materials Project

Ir3Bi3O11 crystallizes in the cubic Pn-3 space group. The structure is three-dimensional. Ir+4.33+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing IrO6 octahedra. The corner-sharing octahedral tilt angles are 54°. There are a spread of Ir–O bond distances ranging from 2.00–2.02 Å. There are two inequivalent Bi3+ sites. In the first Bi3+ site, Bi3+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are two shorter (2.42 Å) and six longer (2.48 Å) Bi–O bond lengths. In the second Bi3+ site, Bi3+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Bi–O bond distances ranging from 2.27–2.80 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Ir+4.33+ and two Bi3+ atoms. In the second O2- site, O2- is bonded in a distorted water-like geometry to two equivalent Ir+4.33+ and two equivalent Bi3+ atoms. In the third O2- site, O2- is bonded to four Bi3+ atoms to form a mixture of edge and corner-sharing OBi4 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cd(W3Br7)2 by Materials Project

Cd(W3Br7)2 crystallizes in the cubic Pn-3 space group. The structure is three-dimensional. W2+ is bonded to five Br1- atoms to form WBr5 square pyramids that share a cornercorner with one CdBr6 octahedra and edges with four equivalent WBr5 square pyramids. The corner-sharing octahedral tilt angles are 46°. There are a spread of W–Br bond distances ranging from 2.64–2.66 Å. Cd2+ is bonded to six equivalent Br1- atoms to form CdBr6 octahedra that share corners with six equivalent WBr5 square pyramids. All Cd–Br bond lengths are 2.86 Å. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 12-coordinate geometry to three equivalent W2+ atoms. In the second Br1- site, Br1- is bonded in a distorted bent 120 degrees geometry to one W2+ and one Cd2+ atom. In the third Br1- site, Br1- is bonded in a 12-coordinate geometry to three equivalent W2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Mo6PbI14 by Materials Project

Mo6PbI14 crystallizes in the cubic Pn-3 space group. The structure is three-dimensional. Mo2+ is bonded to five I1- atoms to form MoI5 square pyramids that share a cornercorner with one PbI6 octahedra and edges with four equivalent MoI5 square pyramids. The corner-sharing octahedral tilt angles are 49°. There are a spread of Mo–I bond distances ranging from 2.79–2.91 Å. Pb2+ is bonded to six equivalent I1- atoms to form PbI6 octahedra that share corners with six equivalent MoI5 square pyramids. All Pb–I bond lengths are 3.29 Å. There are three inequivalent I1- sites. In the first I1- site, I1- is bonded in a 12-coordinate geometry to three equivalent Mo2+ atoms. In the second I1- site, I1- is bonded in a 12-coordinate geometry to three equivalent Mo2+ atoms. In the third I1- site, I1- is bonded in a 2-coordinate geometry to one Mo2+ and one Pb2+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Mo6PbCl14 by Materials Project

Mo6PbCl14 crystallizes in the cubic Pn-3 space group. The structure is three-dimensional. Mo2+ is bonded to five Cl1- atoms to form MoCl5 square pyramids that share a cornercorner with one PbCl6 octahedra and edges with four equivalent MoCl5 square pyramids. The corner-sharing octahedral tilt angles are 53°. There are a spread of Mo–Cl bond distances ranging from 2.47–2.50 Å. Pb2+ is bonded to six equivalent Cl1- atoms to form PbCl6 octahedra that share corners with six equivalent MoCl5 square pyramids. All Pb–Cl bond lengths are 2.91 Å. There are three inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 3-coordinate geometry to three equivalent Mo2+ atoms. In the second Cl1- site, Cl1- is bonded in a distorted bent 120 degrees geometry to one Mo2+ and one Pb2+ atom. In the third Cl1- site, Cl1- is bonded in a 4-coordinate geometry to three equivalent Mo2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Mo6PbBr14 by Materials Project

Mo6PbBr14 crystallizes in the cubic Pn-3 space group. The structure is three-dimensional. Mo2+ is bonded to five Br1- atoms to form MoBr5 square pyramids that share a cornercorner with one PbBr6 octahedra and edges with four equivalent MoBr5 square pyramids. The corner-sharing octahedral tilt angles are 52°. There are a spread of Mo–Br bond distances ranging from 2.61–2.66 Å. Pb2+ is bonded to six equivalent Br1- atoms to form PbBr6 octahedra that share corners with six equivalent MoBr5 square pyramids. All Pb–Br bond lengths are 3.10 Å. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 6-coordinate geometry to three equivalent Mo2+ atoms. In the second Br1- site, Br1- is bonded in a 12-coordinate geometry to three equivalent Mo2+ atoms. In the third Br1- site, Br1- is bonded in a distorted bent 120 degrees geometry to one Mo2+ and one Pb2+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe(W3Cl7)2 by Materials Project

Fe(W3Cl7)2 crystallizes in the cubic Pn-3 space group. The structure is three-dimensional. W2+ is bonded to five Cl1- atoms to form WCl5 square pyramids that share a cornercorner with one FeCl6 octahedra and edges with four equivalent WCl5 square pyramids. The corner-sharing octahedral tilt angles are 44°. There are a spread of W–Cl bond distances ranging from 2.49–2.51 Å. Fe2+ is bonded to six equivalent Cl1- atoms to form FeCl6 octahedra that share corners with six equivalent WCl5 square pyramids. All Fe–Cl bond lengths are 2.40 Å. There are three inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 5-coordinate geometry to three equivalent W2+ atoms. In the second Cl1- site, Cl1- is bonded in a 9-coordinate geometry to three equivalent W2+ atoms. In the third Cl1- site, Cl1- is bonded in a distorted bent 150 degrees geometry to one W2+ and one Fe2+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Co(W3Cl7)2 by Materials Project

Co(W3Cl7)2 crystallizes in the cubic Pn-3 space group. The structure is three-dimensional. W2+ is bonded to five Cl1- atoms to form WCl5 square pyramids that share a cornercorner with one CoCl6 octahedra and edges with four equivalent WCl5 square pyramids. The corner-sharing octahedral tilt angles are 45°. There are a spread of W–Cl bond distances ranging from 2.49–2.52 Å. Co2+ is bonded to six equivalent Cl1- atoms to form CoCl6 octahedra that share corners with six equivalent WCl5 square pyramids. All Co–Cl bond lengths are 2.49 Å. There are three inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 5-coordinate geometry to three equivalent W2+ atoms. In the second Cl1- site, Cl1- is bonded in a 12-coordinate geometry to three equivalent W2+ atoms. In the third Cl1- site, Cl1- is bonded in a distorted bent 150 degrees geometry to one W2+ and one Co2+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ag(W3Br7)2 by Materials Project

Ag(W3Br7)2 crystallizes in the cubic Pn-3 space group. The structure is three-dimensional. W+2.17+ is bonded to five Br1- atoms to form WBr5 square pyramids that share a cornercorner with one AgBr6 octahedra and edges with four equivalent WBr5 square pyramids. The corner-sharing octahedral tilt angles are 45°. There are a spread of W–Br bond distances ranging from 2.61–2.66 Å. Ag1+ is bonded to six equivalent Br1- atoms to form AgBr6 octahedra that share corners with six equivalent WBr5 square pyramids. All Ag–Br bond lengths are 2.91 Å. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 5-coordinate geometry to three equivalent W+2.17+ atoms. In the second Br1- site, Br1- is bonded in a distorted bent 150 degrees geometry to one W+2.17+ and one Ag1+ atom. In the third Br1- site, Br1- is bonded in a 12-coordinate geometry to three equivalent W+2.17+ atoms.

36 MATERIALS SCIENCE↗