Crystal structures and ferroelectric properties of La-doped Bi4Ti3O12 crystals

被引：0
|
作者：
Kim, JP [1 ]
Cho, CR
Lee, SH
Ryu, MK
Jang, MS
机构：
[1] Korea Basic Sci Inst, Busan Branch, Pusan 609735, South Korea
[2] Pusan Natl Univ, Res Ctr Dielect & Adv Matter Phys, Pusan 609735, South Korea
来源：
JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2003年 / 42卷
关键词：
P-E hysteresis loop; conventional flux method; bismuth titanate; crystal growth;
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
La-doped Bi4Ti3O12 crystals are grown by a conventional flux method using Bi2O3 as a flux. The grown crystals exhibit plate-like morphologies and show only Bi4Ti3O12(00l) diffraction peaks. The remanent polarization P-r and the coercive field E-c of Bi4.3Ti3O12, Bi3.65La0.47Ti3O12 and Bi2.76La1.67Ti3O12 crystals are 3.2, 5.2 and 0.3 muC/cm(2), and 5.6, 7.6 and 0.6 kV/cm, respectively, under an applied field of about 16.5 kV/cm. However, Bi2.76La1.67Ti3O12 crystal seems to be not saturated. Bi4-xLaxTi3O12 crystals are tend to change from monoclinic to orthorhombic structure with increasing La concentration because those are substituted La for Bi with lone pair electron.
引用
收藏
页码：S1240 / S1243
页数：4
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