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

doi:10.1080/00150190600689761

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

Condensed Matter Physics

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	159-167
Number of pages	9
Journal	Ferroelectrics
Volume	335
DOIs	https://doi.org/10.1080/00150190600689761
Publication status	Published - Jul 1 2006

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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

abstract = "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.",

author = "Sigeru Kaku and Satoshi Miyauchi and Kazu Yamada and Daisuke Matsumoto and Yukio Watanabe",

note = "Funding Information: This work is supported by JSPS Grant-in-Aid for Scientific Research No. 16340093.",

year = "2006",

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doi = "10.1080/00150190600689761",

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T1 - A nonohmic positive temperature coefficient of resistance in lattice-matched and lattice-mismatched epitaxial BaTiO3 films

AU - Kaku, Sigeru

AU - Miyauchi, Satoshi

AU - Yamada, Kazu

AU - Matsumoto, Daisuke

AU - Watanabe, Yukio

N1 - Funding Information: This work is supported by JSPS Grant-in-Aid for Scientific Research No. 16340093.

PY - 2006/7/1

Y1 - 2006/7/1

N2 - 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.

AB - 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.

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