TEMPERATURE-INDUCED PHASE-TRANSITION AND MORPHOTROPIC PHASE-BOUNDARY IN THE NANOCRYSTALLINE PB1-XSRXTIO3 SYSTEM

Authors
MENG JF ZOU GT MA YZ WANG XH ZHAO MY
Citation
Jf. Meng et al., TEMPERATURE-INDUCED PHASE-TRANSITION AND MORPHOTROPIC PHASE-BOUNDARY IN THE NANOCRYSTALLINE PB1-XSRXTIO3 SYSTEM, Journal of physics. Condensed matter, 6(32), 1994, pp. 6549-6556
Citations number
19
Categorie Soggetti
Physics, Condensed Matter
Journal title
Journal of physics. Condensed matter → ACNP
ISSN journal
09538984
Volume
6
Issue
32
Year of publication
1994
Pages
6549 - 6556
Database
ISI
SICI code
0953-8984(1994)6:32<6549:TPAMPI>2.0.ZU;2-T
Abstract
The Raman spectra in the nanocrystalline Pb1-xSrxTiO3 system show that the morphotropic phase transition from the tetragonal phase to the cu bic structure occurs at x(c) = 0.57 and it can be associated with 'sof tening' of the lowest-frequency E(TO) phonon mode. The phase transitio n temperature in Pb0.8Sr0.2TiO3 decreases with decreasing grain size. The disappearance of the ferroelectric phase of Pb0.8Sr0.2TiO3 has bee n discussed as a function of grain size. The correlation between the t emperature-induced and the Sr-concentration-induced phase transition i n nanocrystalline Pb1-xSrxTiO3 has been observed.