Lattice strains in disordered mixed salts

A. I. Frenkel; E. A. Stern; A. Voronel; S. M. Heald

doi:10.1016/S0038-1098(96)80051-2

Lattice strains in disordered mixed salts

A. I. Frenkel, E. A. Stern, A. Voronel, S. M. Heald

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

X-Ray absorption fine structure measurements, and computer simulations were used to solve the structure of mixed salts RbBr_xCl_1-x. Deviations from the average NaCl structure (nearest neighbor distances and buckling angles) were observed which maximize in the midst of the concentration range. This induces a local elastic strain energy which is the cause of the melting point depression below the linear interpolation. It is shown for the first time that the concentration-weighted average of the Rb-Br and Rb-Cl bond lengths is always greater than the average determined by diffraction.

Original language	English
Pages (from-to)	67-71
Number of pages	5
Journal	Solid State Communications
Volume	99
Issue number	2
DOIs	https://doi.org/10.1016/S0038-1098(96)80051-2
State	Published - Jul 1996
Externally published	Yes

Bibliographical note

Funding Information:
by DOE grant DE-FGO6-90ER45425. by the US - Israel BSF Grant 90-00152/l.

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10.1016/S0038-1098(96)80051-2

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title = "Lattice strains in disordered mixed salts",

abstract = "X-Ray absorption fine structure measurements, and computer simulations were used to solve the structure of mixed salts RbBrxCl1-x. Deviations from the average NaCl structure (nearest neighbor distances and buckling angles) were observed which maximize in the midst of the concentration range. This induces a local elastic strain energy which is the cause of the melting point depression below the linear interpolation. It is shown for the first time that the concentration-weighted average of the Rb-Br and Rb-Cl bond lengths is always greater than the average determined by diffraction.",

author = "Frenkel, {A. I.} and Stern, {E. A.} and A. Voronel and Heald, {S. M.}",

note = "Funding Information: by DOE grant DE-FGO6-90ER45425. by the US - Israel BSF Grant 90-00152/l.",

year = "1996",

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doi = "10.1016/S0038-1098(96)80051-2",

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AU - Frenkel, A. I.

AU - Stern, E. A.

AU - Voronel, A.

AU - Heald, S. M.

N1 - Funding Information: by DOE grant DE-FGO6-90ER45425. by the US - Israel BSF Grant 90-00152/l.

PY - 1996/7

Y1 - 1996/7

N2 - X-Ray absorption fine structure measurements, and computer simulations were used to solve the structure of mixed salts RbBrxCl1-x. Deviations from the average NaCl structure (nearest neighbor distances and buckling angles) were observed which maximize in the midst of the concentration range. This induces a local elastic strain energy which is the cause of the melting point depression below the linear interpolation. It is shown for the first time that the concentration-weighted average of the Rb-Br and Rb-Cl bond lengths is always greater than the average determined by diffraction.

AB - X-Ray absorption fine structure measurements, and computer simulations were used to solve the structure of mixed salts RbBrxCl1-x. Deviations from the average NaCl structure (nearest neighbor distances and buckling angles) were observed which maximize in the midst of the concentration range. This induces a local elastic strain energy which is the cause of the melting point depression below the linear interpolation. It is shown for the first time that the concentration-weighted average of the Rb-Br and Rb-Cl bond lengths is always greater than the average determined by diffraction.

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VL - 99

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JF - Solid State Communications

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Lattice strains in disordered mixed salts

Abstract

Bibliographical note

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