Ferroelectricity driven by twisting of silicate tetrahedral chains

Hiroki Taniguchi, Akihide Kuwabara, Jungeun Kim, Younghun Kim, Hiroki Moriwake, Sungwng Kim, Takuya Hoshiyama, Tsukasa Koyama, Shigeo Mori, Masaki Takata, Hideo Hosono, Yoshiyuki Inaguma, Mitsuru Itoh

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)


A lead-free ferroelectric: The occurrence of ferroelectricity is demonstrated in a silicate-based compound (Bi2SiO5, see picture), by direct observation of polarization switching. The mechanism of ferroelectricity in Bi2SiO5 has been studied by Raman scattering, transmission electron microscopy, X-ray powder diffraction, and first-principles calculations. The observed ferroelectricity stems from twisting of the one-dimensional SiO4 tetrahedral chain.

Original languageEnglish
Pages (from-to)8088-8092
Number of pages5
JournalAngewandte Chemie - International Edition
Issue number31
Publication statusPublished - 2013 Jul 29
Externally publishedYes


  • ferroelectric phase transition
  • ferroelectricity
  • functional oxides
  • oxygen tetrahedra
  • silicates

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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