Dielectric relaxation and ferroelectric phase transition in Sr4BiRTi4Nb6O30 (R = Sm, Eu) ceramics
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- 作者：Gebru Zerihuna ; Gaoshang Gongb ; Shuai Huanga ; Songliu Yuana ; yuansl@hust.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Microstructure ; Dielectric ; Ferroelectricity ; Powder diffraction ; Nanodomains
- 刊名：Current Applied Physics
- 出版年：2016
- 出版时间：August 2016
- 年：2016
- 卷：16
- 期：8
- 页码：843-849
- 全文大小：2233 K
文摘
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Relaxor ferroelectric behavior due to the formation of the polar nanoregions.
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Improvement of the ferroelectric transition temperature well above RT.
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Polarization nanoregions appear on cooling with the increase of interaction.
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columnar grains are formed.
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Broad dielectric constant peaks with strong frequency dispersion are observed.