|
|||||
|
|
Study of phase transformation dynamics in Na1/2Bi1/2TiO3 by Mandelstam-Brillouin scattering |
|
| Authors: | A. I. Fedoseev S. G. Lushnikov S. N. Gvasaliya P. P. Syrnikov S. Kojima |
| Affiliation: | 1. Ioffe Physicotechnical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021, Russia 2. Laboratory for Neutron Scattering Eidgen?ssische Technische Hochschule Zürich and Paul-Scherrer Institute, Villigen, CH, 5232, Switzerland 3. Institute of Material Science, University of Tsukuba, Tsukuba, Ibaraki, 305-8573, Japan |
| Abstract: | The results of the study of Mandelstam-Brillouin light scattering in single-crystal Na1/2Bi1/2TiO3 within a broad temperature interval covering successively the cubic, tetragonal, and rhombohedral phases are reported. Measurements conducted within the range 820–300 K have revealed quasi-elastic scattering and distortion of the phonon spectra in shape, which suggests possible coupling between the low-frequency transverse optical and acoustic modes. These two observed phenomena are believed to be closely interrelated. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |