Grain boundary character dependence of potential barrier in barium titanate

Katsuro Hayashi, T. Yamamoto, Y. Ikuhara, T. Sakuma

研究成果: Contribution to journalArticle

2 引用 (Scopus)

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Positive temperature coefficient of resistivity (PTCR) effect is directly measured in bicrystal specimens of Nb-doped BaTiO3 to examine its grain boundary character dependence and to clarify the nature of the potential barrier formed at grain boundaries. The coherency of grain boundaries is evaluated from a geometric method based on the coincidence of reciprocal lattice points (CRLP). Larger PTCR effects were obtained for random grain boundaries rather than coherent boundaries. The formation of the potential barrier is discussed from an analysis of the resistance-temperature characteristics.

元の言語英語
ページ(範囲)711-714
ページ数4
ジャーナルMaterials Science Forum
294-296
出版物ステータス出版済み - 1999
外部発表Yes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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