X-Ray Study on Lattice Strain and Domain Switching Induced in Rhombohedral PZT by Poling and External Loading
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概要
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The X-ray diffraction method was applied to measure the change of the lattice strain and domain switching in rhombohedral lead zirconate titanate (PZT) due to poling and external straining. The lattice strain was determined from the linear relation between the diffraction angle 2θ and sin^2ψ(ψ is the angle between the normals of the specimen surface and of the diffraction plane). The lattice strain measured by X-rays is at most 15 % of the macrostrain determined from the dimensional change due to poling. Domain switching caused a major part of the macrostrain. External loading induced domain switching and the lattice strain. The lattice strain induced by external loading was at most 25 % of the applied strain. The amount of domain switching was evaluated by the change of the intensity ratio, I_<222>/I_<22^^-2>, of the 222 to 22^^-2 diffraction. The intensity ratio for the normal diffraction (ψ= 0°) was decreased with increasing the applied strain, because the spontaneous polarization direction, the 222 direction, turned to the loading direction. The broadening of X-ray diffraction profiles obtained from the diffraction plane perpendicular to the poling direction was the maximum, indicating the largest microstrain in the poling direction.
- 社団法人日本材料学会の論文
- 2002-03-15
著者
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TANAKA Keisuke
Department of Mathematical and Computing Sciences, Tokyo Institute of Technology
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AKINIWA Yoshiaki
Department of Mechanical Engineering, Nagoya University
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Tanaka Keisuke
Department Of Cardiovascular Surgery Nagoya Daini Red Cross Hospital
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Akiniwa Yoshiaki
Department Of Engineering Science Kyoto University
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Sakaida Y
Dept. Of Mechanical Engineering Shizuoka Univ.
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Shirakihara Kaori
JSPS Research Fellow, Japan Fine Ceramics Center
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SHIRAKIHARA Kaori
Graduate School, Department of Mechanical Engineering, Nagoya University
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SAKAIDA Yoshihisa
Department of Mechanical Engineering, Shizuoka University
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MUKAI Hirokatsu
Denso Co. Ltd.
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Sakaida Yoshihisa
Department Of Mechanical Engineering Faculty Of Engineering Shizuoka University
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Mukai Hirokatsu
Daian Plant Denso Co. Ltd.
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Tanaka Keisuke
Department Of Biochemistry Faculty Of Veterinary Medicine Hokkaido University
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Tanaka Keisuke
Department Of Applied Chemistry Waseda University
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