Structure, ferroelectricity and piezoelectricity evolutions of Bi1-xSmxFeO3 at various temperatures

被引：36

作者：

Chen, Xiaomin ^{[1
,2
]}

Wang, Yiping ^{[3
]}

Yang, Ying ^{[3
]}

Yuan, Guoliang ^{[1
,2
]}

Yin, Jiang ^{[2
]}

Liu, Zhiguo ^{[2
]}

机构：

[1] Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Nanjing 210094, Jiangsu, Peoples R China

[2] Nanjing Univ, Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[3] Nanjing Univ Aeronaut & Astronaut, Precis Driving Lab, Nanjing 210016, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 2012年 / 152卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Multiferroic ceramics; Rapid liquid-phase sintering; Ferroelectricity; Piezoelectricity; BIFEO3;

D O I：

10.1016/j.ssc.2011.12.044

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Insulated Bi1-xSmxFeO3 (x = 0-0.25) were prepared to study their multiferroic properties at various temperatures. Bi1-xSmxFeO3 (x = 0-0.12) shows a rhombohedral-like phase, ferroelectric polarization of >17.8 mu C/cm(2), piezoelectric d(33) value of >35 pC/N at room temperature. Bi1-xSmxFeO3 (x = 0.125-0.2) has a ferroelectric triclinic phase and an anti-polar orthorhombic phase together at room temperature, and Bi0.75Sm0.25FeO3 is mainly composed of a non-polar orthorhombic phase. After the polarized Bi1-xSmxFeO3 (x = 0-0.165) was annealed at various high temperatures, the d(33) evolution supports ferroelectric component exist above 500 degrees C. Raman spectra suggests that the main component of Bi0.875SM0.125FeO3 does not keep a rhombohedral ferroelectric phase above 400 degrees C, thus its ferroelectric traits at high temperature should be due to ferroelectric clusters embedded in orthorhombic phase. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：497 / 500

页数：4

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