Nonlinear positive temperature coefficient of resistance of BaTiO3 film

Motochika Okano, Yukio Watanabe, Sang Wook Cheong

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Abstract

Nonlinear positive temperature coefficient of resistance (PCTR) of BaTiO3 films was studied. Conductance decreasing with increasing temperature (T) above a (T) characteristic was found in the reverse-diode characteristics of metal contacts on strained BaTiO3 epitaxial films. It was suggested that comparing the PCTR effect in ceramics, the anomaly was regarded as a PTCR effect at metal/ferroelectric contact and the origin of the effect in the thin films and single crystals were also discussed.

Original languageEnglish
Pages (from-to)1923-1925
Number of pages3
JournalApplied Physics Letters
Volume82
Issue number12
DOIs
Publication statusPublished - Mar 24 2003

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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