SEARCH · Engineering Papers

Results for “RbI”

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.

SourceResearch connectionFrom yearThrough year

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

13 records

All sources NASA NTRS DOE OSTI

DOE OSTI2020

Materials Data on RbI by Materials Project

RbI is Halite, Rock Salt structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Rb1+ is bonded to six equivalent I1- atoms to form a mixture of corner and edge-sharing RbI6 octahedra. The corner-sharing octahedral tilt angles are 0°. All Rb–I bond lengths are 3.74 Å. I1- is bonded to six equivalent Rb1+ atoms to form a mixture of corner and edge-sharing IRb6 octahedra. The corner-sharing octahedral tilt angles are 0°.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on RbI by Materials Project

RbI is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Rb1+ is bonded in a body-centered cubic geometry to eight equivalent I1- atoms. All Rb–I bond lengths are 3.89 Å. I1- is bonded in a body-centered cubic geometry to eight equivalent Rb1+ atoms.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on RbY(PO3)4 by Materials Project

RbY(PO3)4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Rb1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Rb–O bond distances ranging from 2.97–3.42 Å. Y3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Y–O bond distances ranging from 2.30–2.46 Å. There are four inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.50–1.63 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There is two shorter (1.50 Å) and two longer (1.63 Å) P–O bond length. In the third P5+ site, P5+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.50–1.63 Å. In the fourth P5+ site, P5+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There is two shorter (1.50 Å) and two longer (1.62 Å) P–O bond length. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Rb1+ and two P5+ atoms. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Rb1+ and two P5+ atoms. In the third O2- site, O2- is bonded in a 1-coordinate geometry to one Rb1+, one Y3+, and one P5+ atom. In the fourth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two P5+ atoms. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to one Rb1+, one Y3+, and one P5+ atom. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to one Rb1+, one Y3+, and one P5+ atom. In the seventh O2- site, O2- is bonded in a 1-coordinate geometry to one Rb1+, one Y3+, and one P5+ atom. In the eighth O2- site, O2- is bonded in a distorted single-bond geometry to one Rb1+, one Y3+, and one P5+ atom. In the ninth O2- site, O2- is bonded in a distorted single-bond geometry to one Rb1+, one Y3+, and one P5+ atom. In the tenth O2- site, O2- is bonded in a bent 120 degrees geometry to two P5+ atoms. In the eleventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Y3+ and one P5+ atom. In the twelfth O2- site, O2- is bonded in a distorted single-bond geometry to one Rb1+, one Y3+, and one P5+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on RbY(TeO3)2 by Materials Project

RbY(TeO3)2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Rb1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Rb–O bond distances ranging from 3.00–3.15 Å. Y3+ is bonded in an octahedral geometry to six O2- atoms. There are a spread of Y–O bond distances ranging from 2.26–2.32 Å. There are two inequivalent Te4+ sites. In the first Te4+ site, Te4+ is bonded in a 3-coordinate geometry to three O2- atoms. There is two shorter (1.89 Å) and one longer (1.90 Å) Te–O bond length. In the second Te4+ site, Te4+ is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. There is one shorter (1.88 Å) and two longer (1.89 Å) Te–O bond length. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Y3+ and one Te4+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to one Rb1+, one Y3+, and one Te4+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Rb1+, one Y3+, and one Te4+ atom. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Rb1+, one Y3+, and one Te4+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on RbY(WO4)2 by Materials Project

RbY(WO4)2 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Rb1+ is bonded in a 12-coordinate geometry to ten O2- atoms. There are a spread of Rb–O bond distances ranging from 2.91–3.11 Å. Y3+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Y–O bond distances ranging from 2.29–2.34 Å. W6+ is bonded to six O2- atoms to form a mixture of corner and edge-sharing WO6 octahedra. The corner-sharing octahedral tilt angles are 42°. There are a spread of W–O bond distances ranging from 1.84–2.14 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Rb1+ and two equivalent W6+ atoms. In the second O2- site, O2- is bonded in a 2-coordinate geometry to one Rb1+, one Y3+, and one W6+ atom. In the third O2- site, O2- is bonded in a 4-coordinate geometry to one Rb1+, one Y3+, and two equivalent W6+ atoms. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one Rb1+, one Y3+, and one W6+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on RbY(CO3)4 by Materials Project

RbY(CO3)4 crystallizes in the tetragonal I4_1/a space group. The structure is three-dimensional. Rb is bonded in a 8-coordinate geometry to eight O atoms. There are four shorter (2.73 Å) and four longer (3.47 Å) Rb–O bond lengths. Y is bonded in a 8-coordinate geometry to eight O atoms. There are four shorter (2.37 Å) and four longer (2.41 Å) Y–O bond lengths. C is bonded in a distorted bent 120 degrees geometry to two O atoms. Both C–O bond lengths are 1.26 Å. There are three inequivalent O sites. In the first O site, O is bonded in a distorted bent 120 degrees geometry to one Y and one C atom. In the second O site, O is bonded in a single-bond geometry to one Rb atom. In the third O site, O is bonded in a distorted trigonal planar geometry to one Rb, one Y, and one C atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on RbY(BH4)4 by Materials Project

RbY(BH4)4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Rb1+ is bonded in a 7-coordinate geometry to seven H+0.50+ atoms. There are a spread of Rb–H bond distances ranging from 2.96–3.22 Å. Y3+ is bonded to twelve H+0.50+ atoms to form distorted YH12 cuboctahedra that share faces with four BH4 tetrahedra. There are a spread of Y–H bond distances ranging from 2.30–2.35 Å. There are four inequivalent B3- sites. In the first B3- site, B3- is bonded to four H+0.50+ atoms to form BH4 tetrahedra that share a faceface with one YH12 cuboctahedra. There is one shorter (1.21 Å) and three longer (1.24 Å) B–H bond length. In the second B3- site, B3- is bonded to four H+0.50+ atoms to form BH4 tetrahedra that share a faceface with one YH12 cuboctahedra. There is one shorter (1.21 Å) and three longer (1.24 Å) B–H bond length. In the third B3- site, B3- is bonded to four H+0.50+ atoms to form BH4 tetrahedra that share a faceface with one YH12 cuboctahedra. There is one shorter (1.20 Å) and three longer (1.24 Å) B–H bond length. In the fourth B3- site, B3- is bonded to four H+0.50+ atoms to form BH4 tetrahedra that share a faceface with one YH12 cuboctahedra. There is one shorter (1.20 Å) and three longer (1.24 Å) B–H bond length. There are sixteen inequivalent H+0.50+ sites. In the first H+0.50+ site, H+0.50+ is bonded in a single-bond geometry to two equivalent Rb1+ and one B3- atom. In the second H+0.50+ site, H+0.50+ is bonded in a distorted single-bond geometry to one Y3+ and one B3- atom. In the third H+0.50+ site, H+0.50+ is bonded in a single-bond geometry to one Y3+ and one B3- atom. In the fourth H+0.50+ site, H+0.50+ is bonded in a distorted single-bond geometry to one Y3+ and one B3- atom. In the fifth H+0.50+ site, H+0.50+ is bonded in a single-bond geometry to two equivalent Rb1+ and one B3- atom. In the sixth H+0.50+ site, H+0.50+ is bonded in a distorted single-bond geometry to one Y3+ and one B3- atom. In the seventh H+0.50+ site, H+0.50+ is bonded in a distorted single-bond geometry to one Y3+ and one B3- atom. In the eighth H+0.50+ site, H+0.50+ is bonded in a single-bond geometry to one Y3+ and one B3- atom. In the ninth H+0.50+ site, H+0.50+ is bonded in a single-bond geometry to one Rb1+ and one B3- atom. In the tenth H+0.50+ site, H+0.50+ is bonded in a distorted single-bond geometry to one Y3+ and one B3- atom. In the eleventh H+0.50+ site, H+0.50+ is bonded in a distorted single-bond geometry to one Y3+ and one B3- atom. In the twelfth H+0.50+ site, H+0.50+ is bonded in a distorted single-bond geometry to one Rb1+, one Y3+, and one B3- atom. In the thirteenth H+0.50+ site, H+0.50+ is bonded in a single-bond geometry to one Rb1+ and one B3- atom. In the fourteenth H+0.50+ site, H+0.50+ is bonded in a distorted single-bond geometry to one Y3+ and one B3- atom. In the fifteenth H+0.50+ site, H+0.50+ is bonded in a distorted single-bond geometry to one Y3+ and one B3- atom. In the sixteenth H+0.50+ site, H+0.50+ is bonded in a distorted single-bond geometry to one Y3+ and one B3- atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on RbY(MoO4)2 by Materials Project

RbY(MoO4)2 crystallizes in the orthorhombic Pbcn space group. The structure is three-dimensional. Rb1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Rb–O bond distances ranging from 2.82–3.04 Å. Y3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Y–O bond distances ranging from 2.30–2.58 Å. Mo6+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Mo–O bond distances ranging from 1.75–1.87 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Y3+ and one Mo6+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to one Rb1+, one Y3+, and one Mo6+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Rb1+ and one Mo6+ atom. In the fourth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Y3+ and one Mo6+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on RbY(SeO3)2 by Materials Project

RbY(SeO3)2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Rb1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Rb–O bond distances ranging from 2.97–3.14 Å. Y3+ is bonded in an octahedral geometry to six O2- atoms. There are a spread of Y–O bond distances ranging from 2.24–2.32 Å. There are two inequivalent Se4+ sites. In the first Se4+ site, Se4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There is two shorter (1.72 Å) and one longer (1.74 Å) Se–O bond length. In the second Se4+ site, Se4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There is one shorter (1.71 Å) and two longer (1.73 Å) Se–O bond length. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Y3+ and one Se4+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one Rb1+, one Y3+, and one Se4+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Rb1+, one Y3+, and one Se4+ atom. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Rb1+, one Y3+, and one Se4+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on RbY(MoO4)2 by Materials Project

RbY(MoO4)2 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Rb1+ is bonded in a 12-coordinate geometry to twelve O2- atoms. There are a spread of Rb–O bond distances ranging from 2.85–3.40 Å. Y3+ is bonded in a 6-coordinate geometry to eight O2- atoms. There are a spread of Y–O bond distances ranging from 2.31–2.72 Å. Mo6+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Mo–O bond distances ranging from 1.78–2.42 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Rb1+ and two equivalent Mo6+ atoms. In the second O2- site, O2- is bonded in a 1-coordinate geometry to one Rb1+, two equivalent Y3+, and one Mo6+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one Rb1+, one Y3+, and two equivalent Mo6+ atoms. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Rb1+, one Y3+, and one Mo6+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2023

Direct Experimental Observations of Ion Distributions during Overcharging at the Muscovite–Water Interface by Adsorption of Rb + and Halides (Cl – , Br – , I – ) at High Salinity

Classical electric double layer (EDL) models have been widely used to describe ion distributions at charged solid-water interfaces in dilute electrolytes. However, the chemistry of EDLs remains poorly constrained at high ionic strength where ion-ion correlations control non-classical behavior such as overcharging, i. e., the accumulation of counter-ions in amounts exceeding the substrate's surface charge. Here, we provide direct experimental observations of correlated cation and anion distributions adsorbed at the muscovite (001)-aqueous electrolyte interface as a function of dissolved RbBr concentration ([RbBr]=0.01–5.8 M) using resonant anomalous X-ray reflectivity. Our results show alternating cation-anion layers in the EDL when [RbBr]≳100 mM, whose spatial extension (i. e., ~20 Å from the surface) far exceeds the dimension of the classical Stern layer. Comparison to RbCl and RbI electrolytes indicates that these behaviors are sensitive to the choice of co-ion. This new in-depth molecular-scale understanding of the EDL structure during transition from classical to non-classical regimes supports the development of realistic EDL models for technologies operating at high salinity such as water purification applications or modern electrochemical storage.

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗

DOE OSTI2022

Rare-earth monopnictides: Family of antiferromagnets hosting magnetic Fermi arcs

We report since the discovery of topological insulators a great deal of research effort has been devoted to magnetic topological materials, in which nontrivial spin properties can be controlled by magnetic fields, culminating in a wealth of fundamental phenomena and possible applications. The main focus was on ferromagnetic materials that can host Weyl fermions and therefore spin-textured Fermi arcs. The recent discovery of Fermi arcs and new magnetic band splitting in the antiferromagnet (AFM) NdBi has opened up new avenues for exploration. Here we show that these uncharted effects are not restricted to this specific compound, but also emerge in CeBi and NdSb when they undergo paramagnetic to AFM transition. Our data show that the Fermi arcs in NdSb have twofold symmetry, leading to strong anisotropy that may enhance effects of spin textures on transport properties. Our findings thus demonstrate that the RBi and RSb series are materials that host magnetic Fermi arcs and may be a potential platform for modern spintronics.

75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND↗

DOE OSTI2025

Time-resolved vacuum-ultraviolet photoelectron spectroscopy of the Ã 1 A u state of acetylene

Ultrafast time-resolved photoelectron spectra are reported for the vacuum-ultraviolet (VUV) photoionization of acetylene following excitation to the Ã 1 A u state via UV absorption at 200 nm. The excitation energy lies above the lowest dissociation threshold to C 2 H X̃ 2 Σ + + H, as well as above the threshold for adiabatic dissociation of the Ã 1 A u state to form C 2 H (Ã 2 Π) + H. The time-dependent mass spectra and photoelectron spectra provide insight into the intramolecular decay processes of the Ã 1 A u state. In addition, photoelectron spectra of the Ã 1 A u state with VUV light access both the X̃ 2 Π u and Ã 2 Σ g + states of the ion, as well as the predicted, but previously unobserved, 1 2 Π g state, which corresponds to a two-hole, one-particle configuration that lies in close proximity to the Ã 2 Σ g + state. The 1 2 Π g state is split into 2 A 2 + 2 B 2 and 2 A g + 2 B g states in the cis and trans configurations, respectively. In conclusion, electronic structure calculations, along with trajectory calculations, reproduce the principal features of the experimental data and confirm the assignment of the 1 2 Π g state.

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗