Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Sn”

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 1,189 records · Page 66
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Tm2NiSn6 by Materials Project

Tm2NiSn6 crystallizes in the orthorhombic Cmmm space group. The structure is three-dimensional. Tm is bonded in a 10-coordinate geometry to ten Sn atoms. There are a spread of Tm–Sn bond distances ranging from 3.16–3.44 Å. Ni is bonded in a body-centered cubic geometry to eight Sn atoms. All Ni–Sn bond lengths are 2.71 Å. There are three inequivalent Sn sites. In the first Sn site, Sn is bonded in a 4-coordinate geometry to two equivalent Tm and two equivalent Ni atoms. In the second Sn site, Sn is bonded in a 4-coordinate geometry to two equivalent Tm and two equivalent Ni atoms. In the third Sn site, Sn is bonded in a 4-coordinate geometry to six equivalent Tm and two equivalent Sn atoms. Both Sn–Sn bond lengths are 3.02 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Y3(CuSn)4 by Materials Project

Y3Cu4Sn4 crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. there are two inequivalent Y sites. In the first Y site, Y is bonded to six Sn atoms to form distorted edge-sharing YSn6 octahedra. There are four shorter (3.05 Å) and two longer (3.18 Å) Y–Sn bond lengths. In the second Y site, Y is bonded in a 12-coordinate geometry to six equivalent Cu and six Sn atoms. All Y–Cu bond lengths are 3.19 Å. There are two shorter (3.19 Å) and four longer (3.28 Å) Y–Sn bond lengths. Cu is bonded in a 8-coordinate geometry to three equivalent Y, one Cu, and four Sn atoms. The Cu–Cu bond length is 2.62 Å. There are a spread of Cu–Sn bond distances ranging from 2.64–2.73 Å. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a 9-coordinate geometry to three Y and six equivalent Cu atoms. In the second Sn site, Sn is bonded in a 9-coordinate geometry to six Y, two equivalent Cu, and one Sn atom. The Sn–Sn bond length is 2.84 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2025

Characterizing the surface compositions of supported bimetallic PtSn clusters: Effects of cluster-support interactions and surface adsorbates

PtSn bimetallic clusters on TiO2(110) and highly oriented pyrolytic graphite (HOPG) surfaces have been characterized by scanning tunneling microscopy, low energy ion scattering (LEIS), Xray photoelectron spectroscopy, and temperature programmed desorption (TPD); density functional theory (DFT) calculations have also been performed to better understand adsorption of CO and D2 on the PtSn surfaces. On TiO2 at coverages of 2 ML of Pt and 2 ML of Sn, exclusively bimetallic clusters are formed for both orders of deposition because clusters of the first metal completely cover the surface such that all atoms of the second metal are incorporated into the existing clusters. In contrast, on HOPG, the high mobility and weak cluster-support interactions on HOPG result in much larger 2 ML monometallic clusters (~30 Å high) that do not completely cover the surface, and deposition of the second metal produces larger clusters as well as smaller ones. Despite the difference in cluster morphologies for the different orders of deposition and supports, the LEIS experiments demonstrate that in all cases, the PtSn clusters are rich in Sn at the surface, as expected based on the lower surface free energy for Sn compared to Pt. Furthermore, the +0.2 eV shift in the Sn(3d5/2) binding energy observed on all surfaces in the presence of Pt is consistent with PtSn alloy formation. Deposition of 2 ML of Sn on TiO2 produces two-dimensional clusters with oxidation of Sn and reduction of titania at the clustersupport interface, but addition of Pt to the Sn clusters causes Sn to diffuse away from this interface, leaving Sn in the metallic state. TPD experiments on 2 ML Pt/TiO2 with increasing coverages of Sn show that the number of adsorption sites for D2 sharply decreases to nearly zero at 0.5 ML, while CO adsorption decreases to zero only at much higher Sn coverages of 2 ML. DFT studies for Sn modified Pt surfaces and bulk structures demonstrate that for CO adsorption at low Sn coverages (<0.25 ML), the strong Pt-CO interactions induce diffusion of Pt to the cluster surface and the formation of a bulk Pt3Sn alloy, whereas D2 adsorption does not lead to interactions with the Pt surface that are strong enough to induce alloy formation. A single Sn adatom prevents D2 adsorption on four neighboring Pt atoms via site-blocking and the donation of electron density to Pt.

Li, Fangliang↗
DOE OSTI2020

Materials Data on BaSn3Pd by Materials Project

BaPdSn3 crystallizes in the tetragonal I4mm space group. The structure is three-dimensional. Ba is bonded in a 12-coordinate geometry to five equivalent Pd and twelve Sn atoms. There are four shorter (3.90 Å) and one longer (3.99 Å) Ba–Pd bond lengths. There are a spread of Ba–Sn bond distances ranging from 3.65–3.78 Å. Pd is bonded in a 5-coordinate geometry to five equivalent Ba and five Sn atoms. There are one shorter (2.69 Å) and four longer (2.74 Å) Pd–Sn bond lengths. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a 2-coordinate geometry to four equivalent Ba, two equivalent Pd, and two equivalent Sn atoms. Both Sn–Sn bond lengths are 3.10 Å. In the second Sn site, Sn is bonded in a 1-coordinate geometry to four equivalent Ba, one Pd, and four equivalent Sn atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on BaNiSn3 by Materials Project

BaNiSn3 crystallizes in the tetragonal I4mm space group. The structure is three-dimensional. Ba is bonded in a 12-coordinate geometry to five equivalent Ni and twelve Sn atoms. There are one shorter (3.77 Å) and four longer (3.87 Å) Ba–Ni bond lengths. There are a spread of Ba–Sn bond distances ranging from 3.54–3.70 Å. Ni is bonded in a 5-coordinate geometry to five equivalent Ba and five Sn atoms. There are one shorter (2.57 Å) and four longer (2.63 Å) Ni–Sn bond lengths. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a 12-coordinate geometry to four equivalent Ba, two equivalent Ni, and two equivalent Sn atoms. Both Sn–Sn bond lengths are 3.13 Å. In the second Sn site, Sn is bonded in a 9-coordinate geometry to four equivalent Ba, one Ni, and four equivalent Sn atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on U3Sn13Rh4 by Materials Project

U3Rh4Sn13 crystallizes in the cubic Pm-3n space group. The structure is three-dimensional. U is bonded in a 8-coordinate geometry to four equivalent Rh and twelve equivalent Sn atoms. All U–Rh bond lengths are 3.44 Å. There are eight shorter (3.39 Å) and four longer (3.44 Å) U–Sn bond lengths. Rh is bonded in a 6-coordinate geometry to three equivalent U and six equivalent Sn atoms. All Rh–Sn bond lengths are 2.68 Å. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a cuboctahedral geometry to twelve equivalent Sn atoms. All Sn–Sn bond lengths are 3.37 Å. In the second Sn site, Sn is bonded in a 2-coordinate geometry to three equivalent U, two equivalent Rh, and one Sn atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on YSn2 by Materials Project

YSn2 is Zirconium Disilicide structured and crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Y is bonded in a 10-coordinate geometry to ten Sn atoms. There are a spread of Y–Sn bond distances ranging from 3.17–3.47 Å. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a 4-coordinate geometry to six equivalent Y and two equivalent Sn atoms. Both Sn–Sn bond lengths are 3.02 Å. In the second Sn site, Sn is bonded in a 8-coordinate geometry to four equivalent Y and four equivalent Sn atoms. All Sn–Sn bond lengths are 3.12 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LiTmSn by Materials Project

LiTmSn crystallizes in the hexagonal P6_3mc space group. The structure is three-dimensional. there are two inequivalent Li sites. In the first Li site, Li is bonded in a 3-coordinate geometry to six Tm and four Sn atoms. There are a spread of Li–Tm bond distances ranging from 3.09–3.40 Å. There are a spread of Li–Sn bond distances ranging from 2.70–3.18 Å. In the second Li site, Li is bonded in a 4-coordinate geometry to six equivalent Tm and four Sn atoms. There are three shorter (3.17 Å) and three longer (3.38 Å) Li–Tm bond lengths. There are three shorter (2.71 Å) and one longer (3.01 Å) Li–Sn bond lengths. There are two inequivalent Tm sites. In the first Tm site, Tm is bonded in a 12-coordinate geometry to six equivalent Li and six equivalent Sn atoms. There are three shorter (3.16 Å) and three longer (3.31 Å) Tm–Sn bond lengths. In the second Tm site, Tm is bonded in a 12-coordinate geometry to six Li and six Sn atoms. There are a spread of Tm–Sn bond distances ranging from 3.15–3.33 Å. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a 3-coordinate geometry to four Li and six Tm atoms. In the second Sn site, Sn is bonded in a 3-coordinate geometry to four Li and six equivalent Tm atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on DySn2 by Materials Project

DySn2 is Zirconium Disilicide structured and crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Dy is bonded in a 10-coordinate geometry to ten Sn atoms. There are a spread of Dy–Sn bond distances ranging from 3.16–3.46 Å. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a 4-coordinate geometry to six equivalent Dy and two equivalent Sn atoms. Both Sn–Sn bond lengths are 3.06 Å. In the second Sn site, Sn is bonded in a 8-coordinate geometry to four equivalent Dy and four equivalent Sn atoms. All Sn–Sn bond lengths are 3.12 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce3Co4Sn13 by Materials Project

Ce3Co4Sn13 crystallizes in the cubic Pm-3n space group. The structure is three-dimensional. Ce is bonded in a 12-coordinate geometry to four equivalent Co and twelve equivalent Sn atoms. All Ce–Co bond lengths are 3.40 Å. There are four shorter (3.34 Å) and eight longer (3.41 Å) Ce–Sn bond lengths. Co is bonded in a 6-coordinate geometry to three equivalent Ce and six equivalent Sn atoms. All Co–Sn bond lengths are 2.61 Å. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a 2-coordinate geometry to three equivalent Ce, two equivalent Co, and four Sn atoms. There are a spread of Sn–Sn bond distances ranging from 3.01–3.27 Å. In the second Sn site, Sn is bonded in a cuboctahedral geometry to twelve equivalent Sn atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on BaSn3Pt by Materials Project

BaPtSn3 crystallizes in the tetragonal I4mm space group. The structure is three-dimensional. Ba is bonded in a 12-coordinate geometry to five equivalent Pt and twelve Sn atoms. There are four shorter (3.91 Å) and one longer (3.93 Å) Ba–Pt bond lengths. There are a spread of Ba–Sn bond distances ranging from 3.64–3.78 Å. Pt is bonded in a 5-coordinate geometry to five equivalent Ba and five Sn atoms. There are one shorter (2.67 Å) and four longer (2.73 Å) Pt–Sn bond lengths. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a 2-coordinate geometry to four equivalent Ba, two equivalent Pt, and two equivalent Sn atoms. Both Sn–Sn bond lengths are 3.10 Å. In the second Sn site, Sn is bonded in a distorted single-bond geometry to four equivalent Ba, one Pt, and four equivalent Sn atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Yb3Sn13Rh4 by Materials Project

Yb3Rh4Sn13 crystallizes in the cubic Pm-3n space group. The structure is three-dimensional. Yb is bonded in a 12-coordinate geometry to four equivalent Rh and twelve equivalent Sn atoms. All Yb–Rh bond lengths are 3.46 Å. All Yb–Sn bond lengths are 3.44 Å. Rh is bonded in a 6-coordinate geometry to three equivalent Yb and six equivalent Sn atoms. All Rh–Sn bond lengths are 2.68 Å. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a 2-coordinate geometry to three equivalent Yb, two equivalent Rh, and one Sn atom. The Sn–Sn bond length is 3.35 Å. In the second Sn site, Sn is bonded in a cuboctahedral geometry to twelve equivalent Sn atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on La3Sn13Rh4 by Materials Project

SnLa3Rh4Sn12 crystallizes in the cubic Pm-3n space group. The structure is three-dimensional. La is bonded in a 12-coordinate geometry to four equivalent Rh and twelve equivalent Sn atoms. All La–Rh bond lengths are 3.49 Å. There are four shorter (3.47 Å) and eight longer (3.48 Å) La–Sn bond lengths. Rh is bonded in a 6-coordinate geometry to three equivalent La and six equivalent Sn atoms. All Rh–Sn bond lengths are 2.70 Å. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a cuboctahedral geometry to twelve equivalent Sn atoms. All Sn–Sn bond lengths are 3.38 Å. In the second Sn site, Sn is bonded in a 2-coordinate geometry to three equivalent La, two equivalent Rh, and one Sn atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Th3Sn13Rh4 by Materials Project

Th3Rh4Sn13 crystallizes in the cubic Pm-3n space group. The structure is three-dimensional. Th is bonded in a 12-coordinate geometry to four equivalent Rh and twelve equivalent Sn atoms. All Th–Rh bond lengths are 3.47 Å. There are eight shorter (3.43 Å) and four longer (3.46 Å) Th–Sn bond lengths. Rh is bonded in a 6-coordinate geometry to three equivalent Th and six equivalent Sn atoms. All Rh–Sn bond lengths are 2.70 Å. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a 2-coordinate geometry to three equivalent Th, two equivalent Rh, and one Sn atom. The Sn–Sn bond length is 3.37 Å. In the second Sn site, Sn is bonded in a cuboctahedral geometry to twelve equivalent Sn atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr3Sn13Rh4 by Materials Project

Sr3Rh4Sn13 crystallizes in the cubic Pm-3n space group. The structure is three-dimensional. Sr is bonded in a 12-coordinate geometry to four equivalent Rh and twelve equivalent Sn atoms. All Sr–Rh bond lengths are 3.52 Å. There are four shorter (3.49 Å) and eight longer (3.53 Å) Sr–Sn bond lengths. Rh is bonded in a 6-coordinate geometry to three equivalent Sr and six equivalent Sn atoms. All Rh–Sn bond lengths are 2.71 Å. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a 2-coordinate geometry to three equivalent Sr, two equivalent Rh, and one Sn atom. The Sn–Sn bond length is 3.34 Å. In the second Sn site, Sn is bonded in a cuboctahedral geometry to twelve equivalent Sn atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cu10Sn3 by Materials Project

Cu10Sn3 is Bergman Structure: Mg32(Al,Zn)49 Bergman-derived structured and crystallizes in the hexagonal P6_3 space group. The structure is three-dimensional. there are six inequivalent Cu sites. In the first Cu site, Cu is bonded to six Cu and six equivalent Sn atoms to form CuCu6Sn6 cuboctahedra that share corners with twelve CuCu8Sn4 cuboctahedra, edges with six CuCu8Sn4 cuboctahedra, and faces with fourteen CuCu6Sn6 cuboctahedra. There are three shorter (2.61 Å) and three longer (2.62 Å) Cu–Cu bond lengths. There are three shorter (2.96 Å) and three longer (2.99 Å) Cu–Sn bond lengths. In the second Cu site, Cu is bonded in a distorted q6 geometry to eight Cu and three equivalent Sn atoms. There are a spread of Cu–Cu bond distances ranging from 2.57–2.72 Å. All Cu–Sn bond lengths are 2.79 Å. In the third Cu site, Cu is bonded in a distorted q6 geometry to eight Cu and three equivalent Sn atoms. There are three shorter (2.57 Å) and four longer (2.58 Å) Cu–Cu bond lengths. All Cu–Sn bond lengths are 2.80 Å. In the fourth Cu site, Cu is bonded in a 11-coordinate geometry to eight Cu and three equivalent Sn atoms. All Cu–Cu bond lengths are 2.60 Å. All Cu–Sn bond lengths are 2.69 Å. In the fifth Cu site, Cu is bonded to eight Cu and four equivalent Sn atoms to form a mixture of distorted edge, corner, and face-sharing CuCu8Sn4 cuboctahedra. There are a spread of Cu–Cu bond distances ranging from 2.62–2.86 Å. There are a spread of Cu–Sn bond distances ranging from 2.64–2.92 Å. In the sixth Cu site, Cu is bonded to eight Cu and four equivalent Sn atoms to form a mixture of distorted edge, corner, and face-sharing CuCu8Sn4 cuboctahedra. There are a spread of Cu–Sn bond distances ranging from 2.64–2.92 Å. Sn is bonded in a 9-coordinate geometry to thirteen Cu atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ErSn2 by Materials Project

ErSn2 is Zirconium Disilicide structured and crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Er is bonded in a 10-coordinate geometry to ten Sn atoms. There are a spread of Er–Sn bond distances ranging from 3.15–3.44 Å. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a 8-coordinate geometry to four equivalent Er and four equivalent Sn atoms. All Sn–Sn bond lengths are 3.10 Å. In the second Sn site, Sn is bonded in a 4-coordinate geometry to six equivalent Er and two equivalent Sn atoms. Both Sn–Sn bond lengths are 3.02 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SrNiSn3 by Materials Project

SrNiSn3 crystallizes in the tetragonal I4mm space group. The structure is three-dimensional. Sr is bonded in a 12-coordinate geometry to five equivalent Ni and twelve Sn atoms. There are one shorter (3.75 Å) and four longer (3.81 Å) Sr–Ni bond lengths. There are a spread of Sr–Sn bond distances ranging from 3.47–3.65 Å. Ni is bonded in a 5-coordinate geometry to five equivalent Sr and five Sn atoms. There are one shorter (2.51 Å) and four longer (2.59 Å) Ni–Sn bond lengths. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a 5-coordinate geometry to four equivalent Sr, one Ni, and four equivalent Sn atoms. All Sn–Sn bond lengths are 3.11 Å. In the second Sn site, Sn is bonded in a 12-coordinate geometry to four equivalent Sr, two equivalent Ni, and two equivalent Sn atoms.

36 MATERIALS SCIENCE↗