Theoretical estimation of the linear electro-optic effect in compressively strained c-domain (Ba, Sr)TiO3 thin films using a phenomenological thermodynamic model

Shinya Kondo, Tomoaki Yamada, Alexander Tagantsev, Nava Setter, Masahito Yoshino, Takanori Nagasaki

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The influence of compressive strain on the linear electro-optic (EO) effect in c-domain (BaxSr1 1 x)TiO3 (BST) thin films was theoretically investigated using a phenomenological thermodynamic model. We considered that the c-domain BST thin films were grown on cubic substrates and an electric field was applied parallel to the direction of spontaneous polarization. To estimate the EO coefficients, we considered not only the intrinsic EO effect but also the elasto-optic effect by converse piezoelectric response. We found that the EO response is mostly determined by the difference in temperature from the ferroelectric-to-paraelectric phase transition boundary modified by the strain, and the elasto-optic effect appreciably affects the overall EO coefficient when the intrinsic EO effect is weak.

Original languageEnglish
Pages (from-to)348-352
Number of pages5
JournalJournal of the Ceramic Society of Japan
Volume127
Issue number6
DOIs
Publication statusPublished - Jun 2019
Externally publishedYes

Keywords

  • Barium strontium titanate
  • Electro-optic effect
  • Ferroelectric thin film
  • Misfit strain
  • Thermodynamic theory

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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