SOME PROPERTIES OF NA0.5BI0.5TIO3

Authors
SUCHANICZ J POPRAWSKI R MATYJASIK S
Citation
J. Suchanicz et al., SOME PROPERTIES OF NA0.5BI0.5TIO3, Ferroelectrics, 192(1-4), 1997, pp. 329-333
Citations number
13
Categorie Soggetti
Physics, Condensed Matter","Material Science
Journal title
Ferroelectrics → ACNP
ISSN journal
00150193
Volume
192
Issue
1-4
Year of publication
1997
Pages
329 - 333
Database
ISI
SICI code
0015-0193(1997)192:1-4<329:SPON>2.0.ZU;2-5
Abstract
The specific heat of Na0.5Bi0.5TiO3 crystal in the temperature range 3 00-650 K and the changes of spontaneous polarization of Na0.5Bi0.5TiO3 ceramic in the temperature range 4.2-90 K were measured. The calorime tric measurements showed that the anomaly of specific heat exists in t he temperature range where the phase transition rate from the rhomhedr al phase to the tetragonal phase is utmost. From low-temperature pyroe lectric effect a phonon wave number equal to 128 cm(-1) was found to h ave the main share in the temperature changes of spontaneous polarizat ion.