Colossal dielectric constant and relaxation behaviors in Pr:SrTiO3 ceramics

被引：26

作者：

Liu, Cheng ^{[1
]}

Liu, Peng ^{[1
]}

Zhou, Jian-ping ^{[1
]}

He, Ying ^{[2
]}

Su, Li-na ^{[1
]}

Cao, Lei ^{[1
]}

Zhang, Huai-wu ^{[2
]}

机构：

[1] Shaanxi Normal Univ, Coll Phys & Informat Technol, Xian 710062, Peoples R China

[2] Univ Elect Sci & Technol China, State Key Lab Elect Thin Film & Intergrated Devic, Chengdu 610054, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2010年 / 107卷 / 09期

基金：

中国国家自然科学基金;

关键词：

SRTIO3; THIN-FILMS; STRONTIUM-TITANATE; CACU3TI4O12; CERAMICS; RAMAN-SCATTERING; FERROELECTRICITY; SR1-XCAXTIO3; TEMPERATURES; MECHANISM;

D O I：

10.1063/1.3359715

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Sr(1-x)Pr(x)TiO(3) ceramics (0.00 <= x <= 0.03) were prepared by a traditional solid-state reaction method. Two relaxation processes (marked as A and B) of the Sr(0.09)Pr(0.01)TiO(3) ceramics were investigated by analyzing the E(a) values obtained from the Arrhenius law. Colossal dielectric constant (CDC) was first obtained in Sr(0.09)Pr(0.01)TiO(3) ceramics, whose permittivity was up to 3000 (1 kHz, room temperature), greater than that of pure SrTiO(3) ceramics and samples with more Pr addition (x =0.02 and 0.03). This CDC behavior was related to the internal barrier layer capacitance mechanism. (C) 2010 American Institute of Physics. [doi:10.1063/1.3359715]

引用

页数：4

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