Polar behavior in Mn-doped SrTiO3 ceramics

被引：94

作者：

Tkach, A ^{[1
]}

Vilarinho, PM ^{[1
]}

Kholkin, AL ^{[1
]}

机构：

[1] Univ Aveiro, Dept Ceram & Glass Engn, CICECO, P-3810193 Aveiro, Portugal

来源：

APPLIED PHYSICS LETTERS | 2005年 / 86卷 / 17期

关键词：

D O I：

10.1063/1.1920414

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Polar behavior was found in Sr1-xMnxTiO3(x=0.005-0.02) ceramic system. Radio-frequency dielectric measurements showed a diffuse maximum at 25-65 K shifting to higher temperatures with increasing measurement frequency and amount of Mn. The observation of hysteretic behavior in the P versus E curves shows the existence of a polar state at low temperatures. The hysteresis response slowly degenerates into just nonlinearity as the temperature increases. The observed relaxor-type dielectric behavior is attributed to the formation of electric dipoles and corresponding random fields due to the off-center position of Mn2+ ion at the Sr site of highly polarizable SrTiO3 lattice. (c) 2005 American Institute of Physics.

引用

页码：1 / 3

页数：3

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