Piezoelectricity and ferroelectric cluster size in relaxor ferroelectrics

被引：14
作者：
Wang, L.-F.
Liu, J.-M. [1 ]
机构：
[1] Nanjing Univ, Solid State Microstruct Lab, Nanjing 210093, Peoples R China
[2] Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 09期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1063/1.2775309
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The dipole configuration and electromechanical behaviors of dipole-disorder induced relaxor ferroelectrics (RFs) are investigated using a phenomenological model. In comparison to normal ferroelectric lattice, the RF lattice shows spatially inhomogeneous cluster configuration but no breaking of the dipole orientation symmetry is identified. A clean relationship between the piezoelectric response and the characteristic size of the ferroelectric clusters is established, which predicts a broad peak of the piezoelectric coefficient in response to the dipole disorder degree.
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