Enhanced pyroelectric effect in self-supported films of BaTi O3 with polycrystalline macrodomains

Yahin Yvry, Vera Lyahovitskaya, Ilya Zon, Igor Lubomirsky, Ellen Wachtel, Alexander L. Roytburd

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Self-supported films of nanocrystalline BaTi O3 exhibit a two orders of magnitude enhancement of the pyroelectric coefficient (≈1 μC cm2 K) with respect to the value measured for a single BaTi O3 crystal. The enhancement strongly depends on film geometry and appears only in buckled films where ferroelectric grains undergo self-organization into polycrystalline macrodomains. The authors posit that the enhancement of the pyroelectric effect is related to 90° polarization switching and is, therefore, similar in nature to an "extrinsic" piezoelectric effect.

Original languageEnglish
Article number172905
JournalApplied Physics Letters
Volume90
Issue number17
DOIs
Publication statusPublished - May 21 2007

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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