Domain switching in lead magnesium niobate-lead titanate polycrystalline sheets at single grain level

被引：11
|
作者：
Su, Wei-Sheng [1 ]
Chen, Yang-Fang
Shih, Wan Y.
Luo, Hongyu
Shih, Wei-Heng
机构：
[1] Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA
[2] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
[3] Drexel Univ, Sch Biomed Engn Sci & Hlth Syst, Philadelphia, PA 19104 USA
来源：
APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 11期
基金：
美国国家卫生研究院;
关键词：
D O I：
10.1063/1.2778359
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The authors provide direct evidence of non-180 degrees domain switching in the piezoelectric response of substrate-free 40 mu m thick polycrystalline [Pb(Mg1/3Nb2/3)O-3](0.63)(PbTiO3)(0.37) (PMN-37PT) sheets under dc electric fields through piezoresponse force microscopy (PFM) at the single grain level. The sheet's polarization preferred pointing in the planar direction which was switched to the normal direction at electric field ranging between 1.3 and 1.9 kV/cm. An independent d(31) measurement of PMN-37PT sheets deduced from the axial tip displacement measurements of a 4 mm long PMN-PT/copper cantilever showed enhanced d(31) values that peaked at -2700 pm/V in the same range of electric field, consistent with the PFM observation.
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页数：3
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