Apparent colossal dielectric relaxation in SrTiO3 at high temperature

Mamoru Fukunaga; Yoshiaki Uesu; Wataru Kobayashi; Ichiro Terasaki

doi:10.1143/JJAP.44.7141

Apparent colossal dielectric relaxation in SrTiO₃ at high temperature

Mamoru Fukunaga, Yoshiaki Uesu, Wataru Kobayashi, Ichiro Terasaki

School of Science

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

5 Citations (Scopus)

Abstract

Complex dielectric constants of SrTiO₃ ceramics and single crystals were measured in the temperature range of 303 K to 673 K and the frequency range of 100mHz to 100 kHz. It was found that the ceramic sample exhibits a steplike colossal dielectric relaxation similar to the distorted perovskite CaCu₃Ti₄O₁₂, while the single crystal exhibits a relaxor-like relaxation. Both features can be explained with a heterogeneous structure model.

Original language	English
Pages (from-to)	7141-7143
Number of pages	3
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	44
Issue number	9 B
DOIs	https://doi.org/10.1143/JJAP.44.7141
Publication status	Published - Sept 22 2005

Keywords

Dielectric relaxation
Heterogeneity
SrTiO

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.44.7141

Cite this

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AU - Fukunaga, Mamoru

AU - Uesu, Yoshiaki

AU - Kobayashi, Wataru

AU - Terasaki, Ichiro

PY - 2005/9/22

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N2 - Complex dielectric constants of SrTiO3 ceramics and single crystals were measured in the temperature range of 303 K to 673 K and the frequency range of 100mHz to 100 kHz. It was found that the ceramic sample exhibits a steplike colossal dielectric relaxation similar to the distorted perovskite CaCu3Ti4O12, while the single crystal exhibits a relaxor-like relaxation. Both features can be explained with a heterogeneous structure model.

AB - Complex dielectric constants of SrTiO3 ceramics and single crystals were measured in the temperature range of 303 K to 673 K and the frequency range of 100mHz to 100 kHz. It was found that the ceramic sample exhibits a steplike colossal dielectric relaxation similar to the distorted perovskite CaCu3Ti4O12, while the single crystal exhibits a relaxor-like relaxation. Both features can be explained with a heterogeneous structure model.

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