Enhanced flexoelectricity through residual ferroelectricity in barium strontium titanate

Lauren M. Garten, Susan Trolier-Mckinstry

Research output: Contribution to journalArticle

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Abstract

Residual ferroelectricity is observed in barium strontium titanate ceramics over 30 °C above the global phase transition temperature, in the same temperature range in which anomalously large flexoelectric coefficients are reported. The application of a strain gradient leads to strain gradient-induced poling or flexoelectric poling. This was observed by the development of a remanent polarization in flexoelectric measurements, an induced d33 piezoelectric response even after the strain gradient was removed, and the production of an internal bias of 9 kV m-1. It is concluded that residual ferroelectric response considerably enhances the observed flexoelectric response.

Original languageEnglish (US)
Article number094102
JournalJournal of Applied Physics
Volume117
Issue number9
DOIs
StatePublished - Mar 7 2015

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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