Relaxor-like behavior of BaTiO3 crystals from acoustic emission study

E. Dul'kin*, J. Petzelt, S. Kamba, E. Mojaev, M. Roth

*Corresponding author for this work

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Abstract

BaTiO3 crystals were studied by means of the acoustic emission during thermal cycling through 300-700 K range. In addition to pronounced acoustic emission at the ferroelectric phase transition temperature T c ≈400 K, also nucleation of nanoclusters was detected at somewhat smeared Burns temperature Td ≈530-570 K and their local freezing at T* ≈506 K. Bias electric field shifts the T and Tc linearly up, T more steeply than Tc. Except for its much faster cluster dynamics than that of classical relaxor materials, BaTiO3 shows many relaxor-like features in its paraelectric phase.

Original languageAmerican English
Article number032903
JournalApplied Physics Letters
Volume97
Issue number3
DOIs
StatePublished - 19 Jul 2010

Bibliographical note

Funding Information:
The work was supported by the Czech Science Foundation. (Project No. P204/10/0616) , MPO (Project No.FR-TI2/165) and Czech Academy of Sciences (Project No. AVOZ 10100520).

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