Polarization- And Strain-Mediated Control of Negative Thermal Expansion and Ferroelasticity in BiInO3-BiZn1/2Ti1/2O3

  • Takumi Nishikubo
  • , Takahiro Ogata
  • , Lalitha Kodumudi Venkataraman
  • , Daniel Isaia
  • , Zhao Pan
  • , Yuki Sakai
  • , Lei Hu
  • , Shogo Kawaguchi
  • , Akihiko Machida
  • , Tetsu Watanuki
  • , Hongwu Yu
  • , Yoichi Okimoto
  • , Shin Ya Koshihara
  • , Shigeo Mori
  • , Jürgen Rödel
  • , Masaki Azuma

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

A solid solution between polar perovskite oxides BiInO3 and BiZn1/2Ti1/2O3 with the atomic displacement of Bi3+ and B-site (In and Zn1/2Ti1/2) as the origin of spontaneous electric polarization was investigated. Polar orthorhombic to nonpolar orthorhombic transition accompanied by negative thermal expansion (NTE) with constant volume shrinkage was observed for x ≤ 0.3 in BiIn1-xZnx/2Tix/2O3. A relative shift of electrical polarization from A-site Bi3+ to B-site ions reduced the transition temperature and enabled NTE in a wide temperature range with suppressed temperature hysteresis. In addition, new LiNbO3-type phases were found for 0.4 ≤ x ≤ 0.8 with ferroelastic and piezoelectric behaviors, featuring a very high switching strain and demonstrating the potential for enhanced domain wall mobility.

Original languageEnglish
Pages (from-to)1498-1505
Number of pages8
JournalChemistry of Materials
Volume33
Issue number4
DOIs
StatePublished - 23 Feb 2021
Externally publishedYes

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