Citation
Sn. Ivanov et al., The transport of non-equilibrium phonons in highly disordered ferroelectric ceramics, PHYSICA B, 263, 1999, pp. 784-787
Citations number
6
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526
→ ACNP
Volume
263
Year of publication
1999
Pages
784 - 787
Database
ISI
SICI code
0921-4526(199903)263:<784:TTONPI>2.0.ZU;2-T
Abstract
The phonon transport processes in ferroelectric crystals and ceramics was s
tudied experimentally. It was shown that in BaTiO3 crystals the phonon scat
tering is controlled by domain walls. For ferroelectrics with diffusive pha
se transition the effective diffusion coefficient was found to be D-eff pro
portional to T-5 for temperatures 1.7-3.8 K. This dependence is in good cor
relation with the "plateau" region in thermal conductivity. (C) 1999 Elsevi
er Science B.V. All rights reserved.