Depolarization temperature and piezoelectric properties of Na1/2Bi1/2TiO3�?�Na1/2Bi1/2(Zn1/3Nb2/3)O3 ceramics by two-stage calcination method

Bulletin of materials science

Zhao-Hui Shan²  Chang-Rong Zhou¹  Xin-Yu Liu¹ 

[1] School of Material Science and Engineering, Central South University, Changsha Hunan 410083, China$$Department of Information Material Science and Engineering, Guilin University of Electronic Technology, Guilin Guangxi 541004, China$$School of Material Science and Engineering, Central South University, Changsha Hunan 410083, ChinaSchool of Material Science and Engineering, Central South University, Changsha Hunan 410083, China$$Department of Information Material Science and Engineering, Guilin University of Electronic Technology, Guilin Guangxi 541004, China$$Department of Information Material Science and Engineering, Guilin University of Electronic Technology, Guilin Guangxi 541004, ChinaSchool of Material Science and Engineering, Central South University, Changsha Hunan 410083, China$$Department of Information Material Science and Engineering, Guilin University of Electronic Technology, Guilin Guangxi 541004, China$$;Department of Information Material Science and Engineering, Guilin University of Electronic Technology, Guilin Guangxi 541004, China$$Department of Information Material Science and Engineering, Guilin University of Electronic Technology, Guilin Guangxi 541004, ChinaDepartment of Information Material Science and Engineering, Guilin University of Electronic Technology, Guilin Guangxi 541004, China$$

关键词: Lead-free piezoelectric ceramics;    depolarization temperature;    perovskite structure;    piezoelectric properties.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

A new group of NBT-based lead-free piezoelectric ceramics, Na_1/2Bi_1/2TiO₃â€�?�Na_1/2Bi_1/2(Zn_1/3Nb_2/3)O₃, was synthesized using the two-stage calcination method and depolarization temperatures and piezoelectric properties were also investigated. The XRD analysis showed that the ceramics system had a morphotropic phase boundary (MPB) between the rhombohedral and the tetragonal structure. The highest piezoelectric properties of ð‘�??₃₃ = 97 pC/N and ð‘�?_ð‘�? = 0.46 were obtained near MPB compositions. Furthermore, the depolarization temperatures near MPB compositions were slightly decreased and the lowest ð‘�??_d was maintained at 210°C.

【 授权许可】

Unknown