Change of micro and macro symmetry of barium titanate single crystal around Curie temperature and its model

S. Wada*, T. Suzuki, T. Noma, M. Osada, M. Kakihana

*この研究の対応する著者

研究成果: Chapter

2 被引用数 (Scopus)

抄録

Using high-quality barium titanate single crystals, its microscopic and macroscopic symmetries were investigated by a Raman scattering and a polarizing microscope, respectively. Their temperature dependences were also studied through Curie temperature. The microscopic symmetry of P4mm observed at 21.7 °C did not change through Curie temperature. On the other hand, the macroscopic symmetry was P4mm below 133.0 °C while that was Pm3m above 133.0 °C. This difference between the microscopic and macroscopic symmetries above Curie temperature suggested that the barium titanate above 133.0 °C has intrinsically some disordered behavior. We proposed the model, that the flipping behavior of the polar vector can be origin of the disordered behavior.

本文言語English
ホスト出版物のタイトルIEEE International Symposium on Applications of Ferroelectrics
出版社IEEE
ページ487-490
ページ数4
出版ステータスPublished - 1998
外部発表はい
イベントProceedings of the 1998 11th IEEE International Symposium on Appliations of Ferroelectrics (ISAF-XI) - Montreaux, Switz
継続期間: 1998 8月 241998 8月 27

Other

OtherProceedings of the 1998 11th IEEE International Symposium on Appliations of Ferroelectrics (ISAF-XI)
CityMontreaux, Switz
Period98/8/2498/8/27

ASJC Scopus subject areas

  • 工学(全般)
  • 材料科学(全般)

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