Lattice strains in disordered mixed salts

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

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


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.

Original languageEnglish
Pages (from-to)67-71
Number of pages5
JournalSolid State Communications
Issue number2
StatePublished - Jul 1996
Externally publishedYes

Bibliographical note

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


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