DOI: 10.1063/1.1563061. Nonlinear positive temperature coefficient of resistance of BaTiO3 film

Nonlinear positive temperature coefficient of resistance of BaTiO3 film

10.1063/1.1563061

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

Conductance decreasing with increasing temperature (T) above a characteristic T (T0) is found in the reverse-diode characteristics of metal contacts on strained BaTiO3 epitaxial films. The conduction mechanisms below and above T0 near the Curie temperature of the bulk BaTiO3 are distinctly different. Marked similarities to these characteristics are found in the surface conduction on BaTiO3 single crystal in a high vacuum. By comparing the observations with the positive temperature coefficient of resistance (PTCR) effect in ceramics, we suggest that the anomaly is regarded as a PTCR effect at metal/ferroelectric contact, and discuss the origin of the effect in thin films and single crystals.

Bibliography

Okano, M., Watanabe, Y., & Cheong, S.-W. (2003). Nonlinear positive temperature coefficient of resistance of BaTiO3 film. Applied Physics Letters, 82(12), 1923â1925.

Authors 3

Motochika Okano (first)
Yukio Watanabe (additional)
Sang-Wook Cheong (additional)

References 22 Referenced 33

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10.1143/JJAP.40.L1163 / Jpn. J. Appl. Phys. (2001)
{'key': '2024020400092161000_r12'}
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Dates

Type	When
Created	22 years, 5 months ago (March 20, 2003, 6:17 p.m.)
Deposited	1 year, 7 months ago (Feb. 3, 2024, 7:09 p.m.)
Indexed	1 year, 1 month ago (July 27, 2024, 2:30 a.m.)
Issued	22 years, 5 months ago (March 24, 2003)
Published	22 years, 5 months ago (March 24, 2003)
Published Print	22 years, 5 months ago (March 24, 2003)

Funders 0

None

BibTeX

@article{Okano_2003, title={Nonlinear positive temperature coefficient of resistance of BaTiO3 film}, volume={82}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.1563061}, DOI={10.1063/1.1563061}, number={12}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Okano, Motochika and Watanabe, Yukio and Cheong, Sang-Wook}, year={2003}, month=mar, pages={1923–1925} }

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