Raman scattering in the vicinity of the ferroelastic phase transition to the monoclinic phase in KSc(MoO4)(2)

Authors
Nesterenko, NM Peschanskii, AV Fomin, VI
Citation
Nm. Nesterenko et al., Raman scattering in the vicinity of the ferroelastic phase transition to the monoclinic phase in KSc(MoO4)(2), LOW TEMP PH, 27(2), 2001, pp. 148-152
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
LOW TEMPERATURE PHYSICS
ISSN journal
1063777X → ACNP
Volume
27
Issue
2
Year of publication
2001
Pages
148 - 152
Database
ISI
SICI code
1063-777X(200102)27:2<148:RSITVO>2.0.ZU;2-8
Abstract
The low-energy lattice modes are investigated above and below the temperatu re of the phase transition from the trigonal to the monoclinic phase in KSc (MoO4)(2) by the Raman scattering method. The Raman spectra exhibit anomali es at temperatures above the phase transition to the monoclinic phase (T si milar to 260 K) in the region of external oscillations of the tetrahedral a nion. Anomalous behavior of the damping A(g) of the soft mode is observed i n the temperature region 240-260 K. A model of the phase transition is disc ussed. (C) 2001 American Institute of Physics.