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Boosting the piezoelectric property of relaxor ferroelectric single crystal via active manipulation of defect dipole polarization
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作者 Qingyuan Hu Huimin Liao +6 位作者 Xin Liu Li Jin Kexin Song Yongyong Zhuang Zhuo Xu vladimir ya shur Xiaoyong Wei 《Journal of Materiomics》 SCIE CSCD 2023年第1期166-173,共8页
To further enhance the property of piezoelectric materials is of great significance to improve the overall performance of electro-mechanical devices.Here in this work,we propose a thermal annealing and high temperatur... To further enhance the property of piezoelectric materials is of great significance to improve the overall performance of electro-mechanical devices.Here in this work,we propose a thermal annealing and high temperature poling approach to achieve significantly enhanced piezoelectricity in Pb(In_(1/2)Nb_(1/2))O_(3)single bondPb(Mg_(1/3)Nb_(2/3))O_(3)single bondPbTiO_(3)(PIN-PMN-PT)crystals with a morphotropic phase boundary(MPB)composition.The main idea of our approach is to realize a more sufficiently polarized crystal via active manipulation of defects and orientation of defect polarization.Manipulation of defect dipoles by the high temperature poling is proved by the piezo-response force microscopy.Finally,a d_(33)of 3300 pC/N and a SE of 0.25%are obtained,nearly 60%higher than that of conventionally poled crystals.Moreover,such a boosting of piezoelectric property is obtained under a maintained Curie temperature.Our research not only reveals the active control of defect dipole via modified poling method in the PIN-PMN-PT crystal,but also provides a feasible strategy to further improve the property of piezoelectric materials. 展开更多
关键词 Piezoelectric property Relaxor ferroelectric single crystals Defects Defect polarization
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