Polarization rotation transitions in anisotropically strained SrTi O 3 thin films

A. Vasudevarao, Sava Denev, Michael D. Biegalski, Yulan Li, Long Qing Chen, Susan Trolier-Mckinstry, Darrell G. Schlom, Venkatraman Gopalan

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20 Scopus citations

Abstract

Commensurately strained epitaxial SrTi O3 thin films on a GdSc O3 substrate with anisotropic in-plane tensile strains of 1.46% and 1.59% were grown. By using optical second harmonic generation and polarization measurements, a ferroelectric transition from a tetragonal 4mmm phase to a ferroelectric mm2 phase at ∼400 K and an antiferrodistortive transition to a multiferroic phase at 150-175 K are observed, which are in agreement with thermodynamic calculations. In addition, a series of polarization rotation transitions between 〈100〉p to 〈l00〉p (0<l<1) is observed in the 4-400 K temperature range.

Original languageEnglish (US)
Article number192902
JournalApplied Physics Letters
Volume92
Issue number19
DOIs
StatePublished - 2008

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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