Temperature dependence of Raman scattering spectra of KSc(WO4)(2)

Authors
Maczka, M Kojima, S Hanuza, J
Citation
M. Maczka et al., Temperature dependence of Raman scattering spectra of KSc(WO4)(2), J PHYS JPN, 68(6), 1999, pp. 1948-1953
Citations number
13
Categorie Soggetti
Physics
Journal title
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
ISSN journal
00319015 → ACNP
Volume
68
Issue
6
Year of publication
1999
Pages
1948 - 1953
Database
ISI
SICI code
0031-9015(199906)68:6<1948:TDORSS>2.0.ZU;2-G
Abstract
Phase transitions in KSc(WO4)(2) have been studied by means of Raman spectr oscopy. Two soft modes and the splitting of doubly degenerate modes into do ublets have been observed below 307 K. The observed broadening of lattice m odes and anomalous behavior of the librational mode around GO cm(-1) have b een explained as a result of rotational disorder of the WO42- ions. This ma y support the conclusion derived from the ESR studies that the crystal is i ncommensurate below 307 K.