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Title: A Raman study of RbSnBr3
Authors: Kuok, M.H. 
Tan, L.S.
Shen, Z.X. 
Huan, C.H. 
Mok, K.F. 
Keywords: A. insulators
D. phase transition
D. phonons
E. inelastic light scattering
Issue Date: Feb-1996
Citation: Kuok, M.H., Tan, L.S., Shen, Z.X., Huan, C.H., Mok, K.F. (1996-02). A Raman study of RbSnBr3. Solid State Communications 97 (6) : 497-501. ScholarBank@NUS Repository.
Abstract: The Raman spectrum of rubidium tribromostannate, RbSnBr3, has been measured as a function of temperature between 14 and 520 K. On cooling the RbSnBr3 crystal, the low-energy portion of the spectrum undergoes marked changes, suggesting the occurrence of a structural phase transition. A low-lying wing feature appears below 170 K, while the lowest-energy lattice band is found to soften from 19.6 cm-1 at 14 K to ca. 15 cm-1 at 140 K. The results are interpreted on the basis of a tin coordination of octahedral bromide ions. The phase transition is probably displacive in character and is associated with a rotation of the SnBr6 octahedra.
Source Title: Solid State Communications
ISSN: 00381098
DOI: 10.1016/0038-1098(95)00625-7
Appears in Collections:Staff Publications

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