Ferroelectric polarization and piezoelectric properties of layer-structured K0.5Bi4.5Ti4O15 single crystals

被引：33
|
作者：
Noguchi, Yuji [1 ]
Suzuki, Muneyasu [1 ]
Kitanaka, Yuuki [1 ]
Teranishi, Shunsuke [1 ]
Miyayama, Masaru [1 ]
机构：
[1] Univ Tokyo, Adv Sci & Technol Res Ctr, Meguro Ku, Tokyo 1538904, Japan
来源：
APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 03期
关键词：
D O I：
10.1063/1.2956397
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Single crystals of ferroelectric K0.5Bi4.5Ti4O15 with a Bi-layered structure were grown by the flux method, and the properties of polarization hysteresis, piezoelectric strain, and leakage current were investigated along the polar a axis at 25 degrees C. K0.5Bi4.5Ti4O15 crystals exhibited a large remanent polarization of 31 mu C/cm(2), which suggests that K0.5Bi4.5Ti4O15 has the largest spontaneous polarization among Bi layer-structured ferroelectrics with four TiO6 layers in the perovskite blocks. Strain measurements showed that the piezoelectric strain constant was 31 pm/V. (C) 2008 American Institute of Physics.
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页数：3
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