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Boosting the piezoelectric property of relaxor ferroelectric single crystal via active manipulation of defect dipole polarization

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Journal of Materiomics 2023年第1期9卷 166-173页

作者： Qingyuan Hu Huimin Liao Xin Liu Li Jin Kexin Song Yongyong Zhuang Zhuo Xu Vladimir Ya Shur Xiaoyong Wei Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education&International Center for Dielectric ResearchSchool of Electronic ImformationXi'an Jiaotong UniversityXi'an710049China School of Natural Sciences and Mathematics Ural Federal UniversityEkaterinburg620000Russia

To further enhance the property of piezoelectric materials is of great significance to improve the overall performance of electro-mechanical *** 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)*** main idea of our approach is to realize a more sufficiently polarized crystal via active manipulation of defects and orientation of defect *** of defect dipoles by the high temperature poling is proved by the piezo-response force ***,a d_(33)of 3300 pC/N and a SE of 0.25%are obtained,nearly 60%higher than that of conventionally poled ***,such a boosting of piezoelectric property is obtained under a maintained Curie *** 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.

关键词： Piezoelectric property relaxor ferroelectric single crystals Defects Defect polarization

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HIGH CURIE TEMPERATURE PIEZOELECTRIC single crystals Pb(In1/2Nb1/2)O3Pb(Mg1/3Nb2/3)O3-PbTiO3 AND THEIR APPLICATIONS IN MEDICAL ULTRASONIC TRANSDUCERS

HIGH CURIE TEMPERATURE PIEZOELECTRIC SINGLE CRYSTALS Pb(In1/...

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2010全国压电和声波理论及器件技术研讨会

作者： Wei Wang~(*1,2),Yaoyao Zhang~(1,2),Xiangyong Zhao~1,Haosu Luo~1 1 Key Laboratory of Inorganic Functional Material and Device,Shanghai Institute of Ceramics, Chinese Academy of Sciences,215 Chengbei Road,Jiading,Shanghai 201800,China 2 Graduate School of the Chinese Academy of Sciences,Beijing 100039,China

High Cure temperature and larger coercive field ternary Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 (PIN-PMN-PT or PIMNT) single crystals were grown,while maintain comparable piezoelectric properties with *** have designed and prototyped 1.6MHz ultrasonic transducers based on PIN-PMN-PT single crystals,which can be used in transcranial Doppler(TCD) *** with PZT-based TCD probe,the two-way insertion loss achieved by PIN-PMN-PT single crystals-based TCD probe is about 4 dB *** -6dB bandwidth of PIN-PMN-PT single crystal-based transducer is nearly 10%*** improvement of sensitivity and bandwidth of crystal-based probe reveal the great advantages in medical ultrasonic transducers ***,due to the enhanced beam-mode piezoelectric property of PIN-PMN-PT single crystals,the simulation results of ultrasonic phased array based on PIN-PMN-PT as well as PZT-5H ceramic reveal the significant *** 4dB larger sensitivity, 40%shorter impulse response and 20%broader bandwidth(-6dB) of PIN-PMN-PT single crystal-based will certainly improve medical imaging *** PIN-PMN-PT crystals with large size,ultrahigh piezoelectric properties,good thermal stability,and attractive simulation results may become the promising candidate for medical ultrasonic transducers applications.

关键词： relaxor ferroelectric single crystals PIN-PMN-PT PMN-PT ultrasonic transducer

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