Doping-induced structure phase transition of layered ferroelectrics Sr2+xBi4-xTi5-xNbxO18

Authors
Han, J Zou, GT Ge, ZJ
Citation
J. Han et al., Doping-induced structure phase transition of layered ferroelectrics Sr2+xBi4-xTi5-xNbxO18, CHIN PHYS L, 16(7), 1999, pp. 523-525
Citations number
10
Categorie Soggetti
Physics
Journal title
CHINESE PHYSICS LETTERS
ISSN journal
0256307X → ACNP
Volume
16
Issue
7
Year of publication
1999
Pages
523 - 525
Database
ISI
SICI code
0256-307X(1999)16:7<523:DSPTOL>2.0.ZU;2-R
Abstract
Raman spectra of layered ferroelectrics Sr2+xBi4-xTi5-xNbxO18 (0 less than or equal to x less than or equal to 2) and Sr2Bi4-xLaxTi5O18 at room temper ature in the range of 20-1000 cm(-1) were investigated. Vibration modes wer e assigned with the internal mode approach. Two doping-induced structure ph ase transitions were observed at about x = 0.5 and 1.25 for Sr2+xBi4-xTi5-x NbxO18, separately.