Morphotropic Phase Boundary, Weak Ferromagnetism, and Strong Piezoelectric Effect in Bi1-xCaxFeO3-x/2 Compounds

被引：20
|
作者：
Troyanchuk, I. O. [1 ]
Karpinsky, D. V. [1 ]
Bushinsky, M. V. [1 ]
Kovetskaya, M. I. [1 ]
Efimova, E. A. [2 ]
Eremenko, V. V. [3 ]
机构：
[1] Natl Acad Sci Belarus, SSPA Sci & Pract Mat Res Ctr, Minsk 220072, BELARUS
[2] Joint Inst Nucl Res, Dubna 141980, Russia
[3] Verkin Physicotech Inst Low Temp, UA-61103 Kharkov, Ukraine
来源：
JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS | 2011年 / 113卷 / 06期
关键词：
Morphotropic Phase Boundary; Spontaneous Magnetization; Polar Phase; Magnetoelectric Effect; Residual Magnetization;
D O I：
10.1134/S1063776111140196
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The crystal structure and magnetic and piezoelectric properties of the Bi1-xCaxFeO3-x/2 system (x <= 0.2) are studied. The crystal-structure transformations occur in the following sequence: rhombohedral (R3c) polar phase (x <= 0.06) -> modulated polar phase (0.07 <= x <= 0.1) -> modulated antipolar phase (0.11 <= x <= 0.14). The modulated polar and antipolar phases are weakly ferromagnetic with a spontaneous magnetization of 0.25 G cm(3)/g (x = 0.09). In the polar weak ferromagnet with x = 0.09, a uniform piezoelectric response 2.5 times stronger than in the initial BiFeO3 compound is detected by the piezoelectric force microscopy.
引用
收藏
页码：1025 / 1031
页数：7
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