Acoustic phonons in the hexagonal perovskite CsNiCl3 around the Gamma-point

Authors
Visser, D Monteith, AR Ronnow, HR Maaskant, WJA
Citation
D. Visser et al., Acoustic phonons in the hexagonal perovskite CsNiCl3 around the Gamma-point, PHYSICA B, 276, 2000, pp. 302-304
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
276
Year of publication
2000
Pages
302 - 304
Database
ISI
SICI code
0921-4526(200003)276:<302:APITHP>2.0.ZU;2-6
Abstract
The acoustic phonon dispersion curves of the hexagonal perovskite CsNiCl3 w ere measured at room temperature in the vicinity of the Gamma-point along t he [0 0 1] and [1 1 0] directions. The derived velocity of sound values for the longitudinal and transverse acoustic phonons are compared with the vel ocity of sound values from ultrasound and Brillouin scattering measurements as well as model calculations using the GULP code. (C) 2000 Elsevier Scien ce B.V. All rights reserved.