Nontrivial behavior of Tc at the small electric field in BaTiO3 crystals, detected by means of acoustic emission

E. Dul'Kin*, M. Roth

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Cubic-tetragonal phase transitions of [100]-oriented BaTiO3 crystals have been studied by means of an acoustic emission (AE) method, under an external electric field. The Curie temperature (Tc) reveals a nontrivial behavior at the small field, namely, it initially decreases with enhancement of the field, attains a minimum at the threshold field E th = 0.256 kV cm-1, accompanied by the AE count rate , and then starts increasing with a rate of 1.5 K m kV-1 as the field is enhanced. Such nontrivial behavior of Tc is explained as due to the presence of polar nanoregions, recently revealed in BaTiO3 crystals (Ko et al 2011 Phys. Rev. B 84 094123).

Original languageAmerican English
Article number155901
JournalJournal of Physics Condensed Matter
Volume25
Issue number15
DOIs
StatePublished - 17 Apr 2013

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