Temperature-induced phase transition and morphotropic phase boundary in the nanocrystalline Pb1-xSrxTiO3 system

Jinfang Meng, Guangtian Zou, Yanzhang Ma, Xiaohui Wang, Muyu Zhao

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27 Scopus citations

Abstract

The Raman spectra in the nanocrystalline Pb1-xSr xTiO3 system show that the morphotropic phase transition from the tetragonal phase to the cubic structure occurs at xc=0.57 and it can be associated with 'softening' of the lowest-frequency E(TO) phonon mode. The phase transition temperature in Pb0.8Sr 0.2TiO3 decreases with decreasing grain size. The disappearance of the ferroelectric phase of Pb0.8Sr 0.2TiO3 has been discussed as a function of grain size. The correlation between the temperature-induced and the Sr-concentration-induced phase transition in nanocrystalline Pb1-xSrxTiO 3 has been observed.

Original languageEnglish
Article number016
Pages (from-to)6549-6556
Number of pages8
JournalJournal of Physics: Condensed Matter
Volume6
Issue number32
DOIs
StatePublished - 1994

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