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At least 1,441 records · Page 80
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DOE OSTI2020

Materials Data on SnH6Cl2O11 by Materials Project

Sn(H2O)3(ClO4)2 crystallizes in the hexagonal P6_3 space group. The structure is zero-dimensional and consists of four ClO4 clusters and two Sn(H2O)3 clusters. In each ClO4 cluster, there are two inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to one Cl atom. The O–Cl bond length is 1.46 Å. In the second O site, O is bonded in a single-bond geometry to one Cl atom. The O–Cl bond length is 1.49 Å. Cl is bonded in a tetrahedral geometry to four O atoms. In each Sn(H2O)3 cluster, Sn is bonded in a 3-coordinate geometry to three equivalent O atoms. All Sn–O bond lengths are 2.28 Å. There are two inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the second H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. O is bonded in a distorted water-like geometry to one Sn and two H atoms.

36 MATERIALS SCIENCE↗
NASA NTRS1995

Theoretical study of cathode surfaces and high-temperature superconductors

Calculations are presented for the work functions of BaO on W, Os, Pt, and alloys of Re-W, Os-W, and Ir-W that are in excellent agreement with experiment. The observed emission enhancement for alloy relative to tungsten dispenser cathodes is attributed to properties of the substrate crystal structure and explained by the smaller depolarization of the surface dipole on hexagonal as compared to cubic substrates. For Ba and BaO on W(100), the geometry of the adsorbates has been determined by a comparison of inverse photoemission spectra with calculated densities of unoccupied states based on the fully relativistic embedded cluster approach. Results are also discussed for models of scandate cathodes and the electronic structure of oxygen on W(100) at room and elevated temperatures. A detailed comparison is made for the surface electronic structure of the high-temperature superconductor YBa2Cu3O7 as obtained with non-, quasi-, and fully relativistic cluster calculations.

Mueller, Wolfgang↗
DOE OSTI2020

Materials Data on Sb4Au(Xe2F11)2 by Materials Project

Xe4Au(Sb2F11)2 crystallizes in the tetragonal P4_32_12 space group. The structure is zero-dimensional and consists of eight Sb2F11 clusters and four Xe4Au clusters. In each Sb2F11 cluster, there are two inequivalent Sb sites. In the first Sb site, Sb is bonded to six F atoms to form corner-sharing SbF6 octahedra. The corner-sharing octahedral tilt angles are 30°. There are a spread of Sb–F bond distances ranging from 1.89–2.07 Å. In the second Sb site, Sb is bonded to six F atoms to form corner-sharing SbF6 octahedra. The corner-sharing octahedral tilt angles are 30°. There are a spread of Sb–F bond distances ranging from 1.89–2.11 Å. There are eleven inequivalent F sites. In the first F site, F is bonded in a bent 150 degrees geometry to two Sb atoms. In the second F site, F is bonded in a single-bond geometry to one Sb atom. In the third F site, F is bonded in a single-bond geometry to one Sb atom. In the fourth F site, F is bonded in a single-bond geometry to one Sb atom. In the fifth F site, F is bonded in a single-bond geometry to one Sb atom. In the sixth F site, F is bonded in a single-bond geometry to one Sb atom. In the seventh F site, F is bonded in a single-bond geometry to one Sb atom. In the eighth F site, F is bonded in a single-bond geometry to one Sb atom. In the ninth F site, F is bonded in a single-bond geometry to one Sb atom. In the tenth F site, F is bonded in a single-bond geometry to one Sb atom. In the eleventh F site, F is bonded in a single-bond geometry to one Sb atom. In each Xe4Au cluster, there are three inequivalent Xe sites. In the first Xe site, Xe is bonded in a single-bond geometry to one Au atom. The Xe–Au bond length is 2.82 Å. In the second Xe site, Xe is bonded in a single-bond geometry to one Au atom. The Xe–Au bond length is 2.84 Å. In the third Xe site, Xe is bonded in a single-bond geometry to one Au atom. The Xe–Au bond length is 2.77 Å. Au is bonded in a square co-planar geometry to four Xe atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SbIF10 by Materials Project

SbF6IF4 is gamma CuTi structured and crystallizes in the orthorhombic Ibca space group. The structure is zero-dimensional and consists of eight IF4 clusters and eight SbF6 clusters. In each IF4 cluster, I5+ is bonded in a 4-coordinate geometry to four F1- atoms. There is two shorter (1.85 Å) and two longer (1.90 Å) I–F bond length. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one I5+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one I5+ atom. In each SbF6 cluster, Sb5+ is bonded in an octahedral geometry to six F1- atoms. There is two shorter (1.90 Å) and four longer (1.94 Å) Sb–F bond length. There are four inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one Sb5+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one Sb5+ atom. In the third F1- site, F1- is bonded in a single-bond geometry to one Sb5+ atom. In the fourth F1- site, F1- is bonded in a single-bond geometry to one Sb5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on IF7 by Materials Project

IF7 is Indium structured and crystallizes in the orthorhombic Aea2 space group. The structure is zero-dimensional and consists of four IF7 clusters. I is bonded in a pentagonal bipyramidal geometry to seven F atoms. There are a spread of I–F bond distances ranging from 1.86–1.91 Å. There are four inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one I atom. In the second F site, F is bonded in a single-bond geometry to one I atom. In the third F site, F is bonded in a single-bond geometry to one I atom. In the fourth F site, F is bonded in a single-bond geometry to one I atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SeO4 by Materials Project

SeO4 is Silicon tetrafluoride-like structured and crystallizes in the orthorhombic P2_12_12_1 space group. The structure is zero-dimensional and consists of four SeO4 clusters. Se is bonded in a tetrahedral geometry to four O atoms. There is one shorter (1.67 Å) and three longer (1.69 Å) Se–O bond length. There are four inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to one Se atom. In the second O site, O is bonded in a single-bond geometry to one Se atom. In the third O site, O is bonded in a single-bond geometry to one Se atom. In the fourth O site, O is bonded in a single-bond geometry to one Se atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on IF7 by Materials Project

IF7 is Indium structured and crystallizes in the orthorhombic Aea2 space group. The structure is zero-dimensional and consists of four IF7 clusters. I is bonded in a pentagonal bipyramidal geometry to seven F atoms. There is two shorter (1.85 Å) and five longer (1.90 Å) I–F bond length. There are four inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one I atom. In the second F site, F is bonded in a single-bond geometry to one I atom. In the third F site, F is bonded in a single-bond geometry to one I atom. In the fourth F site, F is bonded in a single-bond geometry to one I atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CuClF10 by Materials Project

CuF4ClF6 crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of two ClF6 clusters and two CuF4 clusters. In each ClF6 cluster, Cl is bonded in an octahedral geometry to six F atoms. There are a spread of Cl–F bond distances ranging from 1.70–1.72 Å. There are two inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one Cl atom. In the second F site, F is bonded in a single-bond geometry to one Cl atom. In each CuF4 cluster, Cu is bonded in a rectangular see-saw-like geometry to four F atoms. All Cu–F bond lengths are 1.76 Å. There are four inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one Cu atom. In the second F site, F is bonded in a single-bond geometry to one Cu atom. In the third F site, F is bonded in a single-bond geometry to one Cu atom. In the fourth F site, F is bonded in a single-bond geometry to one Cu atom.

36 MATERIALS SCIENCE↗
DOE OSTI2026

Dark Energy Survey Year 6 Results: MagLim++ Lens Sample Selection and Measurements of Galaxy Clustering

Galaxy clustering is a sensitive probe of the expansion history and growth of structure of the universe, and key degeneracies can be broken by combining these data with measurements of cosmic shear and galaxy-galaxy lensing (a so-called 3$\times$2pt analysis). The largest and least biased statistical samples of galaxies for use in clustering analyses can be collected photometrically through large imaging surveys. However, selecting clean photometric subsamples for cosmology are crucial for avoiding contamination that can bias cosmological constraints. Here we present the MagLim++ galaxy sample, selected to optimize for cosmological constraining power and incorporating an array of novel quality cuts to identify and remove residual contamination. This sample comes from the full six years of observations from the Dark Energy Survey. We present measurements of the two-point angular clustering ($w(θ)$) of 9,186,205 galaxies distributed over 4031 sq. degrees and in six tomographic redshift bins centered at $\bar{z}\approx$ [0.31, 0.44, 0.62, 0.78, 0.90, 1.01]. These measurements are used as part of the 3$\times$2pt and other DES Y6 legacy cosmological analyses in companion works. We describe the battery of null tests and mitigation schemes implemented to address observational, astrophysical, and methodological systematics in the analysis. The resulting $w(θ)$ measurements have a S/N = 149 (90.2 for linear scales only), which we use to place galaxy-clustering-only constraints on the matter density of the Universe, $Ω_m=0.311^{+0.023}_{-0.035}$, and amplitude of galaxy clustering in each redshift bin, $b_iσ_8=[1.16^{+0.04}_{-0.06},\ 1.40^{+0.04}_{-0.06},\ 1.57^{+0.04}_{-0.06},\ 1.59^{+0.04}_{-0.05},\ 1.50^{+0.04}_{-0.05},\ 1.74^{+0.06}_{-0.08}]$.

Weaverdyck, N. [BCCP, Berkeley; UC, Berkeley; LBL,↗
DOE OSTI2020

Materials Data on Tc2O7 by Materials Project

Tc2O7 crystallizes in the orthorhombic Pbca space group. The structure is zero-dimensional and consists of four Tc2O7 clusters. Tc7+ is bonded to four O2- atoms to form corner-sharing TcO4 tetrahedra. There is three shorter (1.71 Å) and one longer (1.87 Å) Tc–O bond length. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one Tc7+ atom. In the second O2- site, O2- is bonded in a linear geometry to two equivalent Tc7+ atoms. In the third O2- site, O2- is bonded in a single-bond geometry to one Tc7+ atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one Tc7+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Os2Xe(O3F5)2 by Materials Project

XeF5Os2O6F5 crystallizes in the orthorhombic Pnma space group. The structure is zero-dimensional and consists of four Os2O6F5 clusters and four XeF5 clusters. In each Os2O6F5 cluster, Os is bonded to three O and three F atoms to form distorted corner-sharing OsO3F3 octahedra. The corner-sharing octahedral tilt angles are 24°. There is two shorter (1.71 Å) and one longer (1.72 Å) Os–O bond length. There are a spread of Os–F bond distances ranging from 2.00–2.17 Å. There are three inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to one Os atom. In the second O site, O is bonded in a single-bond geometry to one Os atom. In the third O site, O is bonded in a single-bond geometry to one Os atom. There are three inequivalent F sites. In the first F site, F is bonded in a bent 150 degrees geometry to two equivalent Os atoms. In the second F site, F is bonded in a single-bond geometry to one Os atom. In the third F site, F is bonded in a single-bond geometry to one Os atom. In each XeF5 cluster, Xe is bonded in a distorted square pyramidal geometry to five F atoms. There is three shorter (1.98 Å) and two longer (1.99 Å) Xe–F bond length. There are four inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one Xe atom. In the second F site, F is bonded in a single-bond geometry to one Xe atom. In the third F site, F is bonded in a single-bond geometry to one Xe atom. In the fourth F site, F is bonded in a single-bond geometry to one Xe atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TeBr6 by Materials Project

TeBr6 is Copper structured and crystallizes in the tetragonal P4/mnc space group. The structure is zero-dimensional and consists of two TeBr6 clusters. Te6+ is bonded in an octahedral geometry to six Br1- atoms. There are two shorter (2.57 Å) and four longer (2.58 Å) Te–Br bond lengths. There are four inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a single-bond geometry to one Te6+ atom. In the second Br1- site, Br1- is bonded in a single-bond geometry to one Te6+ atom. In the third Br1- site, Br1- is bonded in a single-bond geometry to one Te6+ atom. In the fourth Br1- site, Br1- is bonded in a single-bond geometry to one Te6+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on BrF5 by Materials Project

BrF5 crystallizes in the orthorhombic Cmc2_1 space group. The structure is zero-dimensional and consists of four BrF5 clusters. Br5+ is bonded in a square pyramidal geometry to five F1- atoms. There are a spread of Br–F bond distances ranging from 1.75–1.86 Å. There are four inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one Br5+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one Br5+ atom. In the third F1- site, F1- is bonded in a single-bond geometry to one Br5+ atom. In the fourth F1- site, F1- is bonded in a single-bond geometry to one Br5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SeF4 by Materials Project

SeF4 is Cubane-like structured and crystallizes in the orthorhombic P2_12_12_1 space group. The structure is zero-dimensional and consists of four SeF4 clusters. Se4+ is bonded in a rectangular see-saw-like geometry to four F1- atoms. There is two shorter (1.74 Å) and two longer (1.87 Å) Se–F bond length. There are four inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one Se4+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one Se4+ atom. In the third F1- site, F1- is bonded in a single-bond geometry to one Se4+ atom. In the fourth F1- site, F1- is bonded in a single-bond geometry to one Se4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on As2S3(NF6)2 by Materials Project

N2S3(AsF6)2 crystallizes in the monoclinic C2 space group. The structure is zero-dimensional and consists of eight AsF6 clusters and four N2S3 clusters. In each AsF6 cluster, As5+ is bonded in an octahedral geometry to six F1- atoms. There are a spread of As–F bond distances ranging from 1.76–1.81 Å. There are six inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one As5+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one As5+ atom. In the third F1- site, F1- is bonded in a distorted single-bond geometry to one As5+ atom. In the fourth F1- site, F1- is bonded in a single-bond geometry to one As5+ atom. In the fifth F1- site, F1- is bonded in a single-bond geometry to one As5+ atom. In the sixth F1- site, F1- is bonded in a single-bond geometry to one As5+ atom. In each N2S3 cluster, N4+ is bonded in a bent 120 degrees geometry to two S2- atoms. There is one shorter (1.55 Å) and one longer (1.61 Å) N–S bond length. There are three inequivalent S2- sites. In the first S2- site, S2- is bonded in a distorted water-like geometry to two equivalent N4+ atoms. In the second S2- site, S2- is bonded in a distorted single-bond geometry to one N4+ atom. In the third S2- site, S2- is bonded in a distorted single-bond geometry to one N4+ atom. The S–N bond length is 1.55 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ClF5 by Materials Project

ClF5 crystallizes in the orthorhombic Cmc2_1 space group. The structure is zero-dimensional and consists of four ClF5 clusters. Cl is bonded in a square pyramidal geometry to five F atoms. There are a spread of Cl–F bond distances ranging from 1.63–1.75 Å. There are four inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one Cl atom. In the second F site, F is bonded in a single-bond geometry to one Cl atom. In the third F site, F is bonded in a single-bond geometry to one Cl atom. In the fourth F site, F is bonded in a single-bond geometry to one Cl atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ZnH6Cl2O3 by Materials Project

Zn(H2O)6ZnCl4 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two ZnCl4 clusters and two zinc hexahydrate molecules. In each ZnCl4 cluster, Zn2+ is bonded in a tetrahedral geometry to four Cl1- atoms. There are a spread of Zn–Cl bond distances ranging from 2.27–2.34 Å. There are four inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a single-bond geometry to one Zn2+ atom. In the second Cl1- site, Cl1- is bonded in a single-bond geometry to one Zn2+ atom. In the third Cl1- site, Cl1- is bonded in a single-bond geometry to one Zn2+ atom. In the fourth Cl1- site, Cl1- is bonded in a single-bond geometry to one Zn2+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CuPb2I3O2 by Materials Project

CuI3(PbO)2 crystallizes in the orthorhombic Fddd space group. The structure is zero-dimensional and consists of sixteen CuI3 clusters and sixteen PbO clusters. In each CuI3 cluster, there are two inequivalent Cu1+ sites. In the first Cu1+ site, Cu1+ is bonded to four I1- atoms to form edge-sharing CuI4 tetrahedra. There are two shorter (2.57 Å) and two longer (2.58 Å) Cu–I bond lengths. In the second Cu1+ site, Cu1+ is bonded to four I1- atoms to form edge-sharing CuI4 tetrahedra. There are two shorter (2.57 Å) and two longer (2.62 Å) Cu–I bond lengths. There are three inequivalent I1- sites. In the first I1- site, I1- is bonded in a single-bond geometry to one Cu1+ atom. In the second I1- site, I1- is bonded in a single-bond geometry to one Cu1+ atom. In the third I1- site, I1- is bonded in a 4-coordinate geometry to two Cu1+ atoms. In each PbO cluster, there are two inequivalent Pb3+ sites. In the first Pb3+ site, Pb3+ is bonded in a 3-coordinate geometry to three O2- atoms. There are two shorter (2.29 Å) and one longer (2.30 Å) Pb–O bond lengths. In the second Pb3+ site, Pb3+ is bonded in a 3-coordinate geometry to three O2- atoms. There are a spread of Pb–O bond distances ranging from 2.27–2.29 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to three Pb3+ atoms. In the second O2- site, O2- is bonded in a 3-coordinate geometry to three Pb3+ atoms.

36 MATERIALS SCIENCE↗