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Electric-field-induced phase transitions of <001>-oriented Pb(Mg1/3Nb2/3)O3-PbTiO3 single crystals

被引：4
作者：
Ren, W [1 ]
Han, L [1 ]
Wicks, R [1 ]
Yang, G [1 ]
Mukherjee, BK [1 ]
机构：
[1] Royal Mil Coll Canada, Dept Phys, Kingston, ON K7K 7B4, Canada
来源：
Smart Structures and Materials 2005: Active Materials: Behavior and Mechanics | 2005年 / 5761卷
关键词：
PMN-PT single crystals; phase transitions; field dependence; piezoelectric constants; temperature dependence;
D O I：
10.1117/12.598152
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Electric-field-induced phase transitions and piezoelectric properties of < 001 >-oriented Pb(Mg1/3Nb2/3)O-3-32%PbTiO3 (PMN-PT) single crystals have been investigated as a function of temperature. It was found that the phase transitions and piezoelectric properties for PMN-PT crystals are strongly dependent on temperature. The measurements of polarization and longitudinal strain as a function of a unipolar electric field show that the field for the induced monoclinic-tetragonal phase transition decreases linearly with temperature in the range between 23 degrees C and 75 degrees C. Raising the temperature can stabilize the tetragonal phase in < 001 >-oriented PMN-PT crystals. The effective longitudinal piezoelectric constant, d(33), in the monoclinic phase increases with temperature. Meanwhile in the field-induced tetragonal phase, d(33) is much smaller and has little change with temperature. The electric-field-induced phase transition from a cubic phase to a tetragonal phase was observed at 125 degrees C.
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收藏
页码：272 / 278
页数：7
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