A nonohmic positive temperature coefficient of resistance in lattice-matched and lattice-mismatched epitaxial BaTiO3 films

Sigeru Kaku, Satoshi Miyauchi, Kazu Yamada, Daisuke Matsumoto, Yukio Watanabe

研究成果: Contribution to journalArticle査読

4 被引用数 (Scopus)

抄録

We report the finding of two new effects in the current conduction through ferroelectric films: a temperature-induced abrupt conductance change and an effect similar to the positive-temperature-coefficient-of-resistance (PTCR). Here, we use mostly the lattice-mismatched epitaxial heterostructure BaTiO 3 /(La,Sr) 2 CuO 4 . The results should provide an insight into the insulator-metal transition in insulators and the new class of the thin-film PTCR.

本文言語英語
ページ(範囲)159-167
ページ数9
ジャーナルFerroelectrics
335
DOI
出版ステータス出版済み - 7 1 2006

All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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