Room-temperature electro-optic properties of strained SrTiO3 films grown on DyScO3

Hongzhou Ma, Jeremy Levy, Michael D. Biegalski, Susan Trolier-Mckinstry, Darrell G. Schlom

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The electro-optic response of epitaxially strained SrTiO3 grown on bulk DyScO3 substrates is measured as a function of applied in-plane bias (both magnitude and direction) and light polarization. The effective electro-optic coefficients are bias-field dependent. Hysteresis is observed at room temperature, indicative of residual polarity, which is believed to be due to long-lived alignment of nanopolar regions possibly due to defects. A simple model incorporating non- 180° -nanoscale domains can account for most of the experimental observations.

Original languageEnglish (US)
Article number014102
JournalJournal of Applied Physics
Issue number1
StatePublished - 2009

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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