Conductivity of lattice-mismatched epitaxial BaTiO3 films exhibiting abrupt step-like temperature dependence

Satoshi Miyauchi, Yukio Watanabe

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

BaTiO3/(La,Sr)2CuO4 multilayered films are epitaxially grown on [001] SrTiO3 single crystals, X-ray diffractometry shows that the BaTiO3 layer is a mixture of a- and c-axis-oriented regions. The current-voltage characteristics of the films are measured between RT and 150°C, and the temperature (T) dependence of the conductivity σ of the films is deduced. The as-grown films show mostly activation-type T-dependence of σ but exhibit an abrupt change typically once of twenty times. When the films are post-annealed, the films constantly exhibit anomalous abrupt changes in the T-dependence of σ.

Original languageEnglish
Pages (from-to)250-253
Number of pages4
JournalJournal of the Korean Physical Society
Volume46
Issue number1
Publication statusPublished - Jan 1 2005

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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