Investigation on relaxor-ferroelectric behavior of BNBT-KNN ceramics with Ta doping  

作　　者：Chenglong Zhang Shurong Li Suzhi Li Le Zhang Haijun Wu 

机构地区：[1]State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong University,710049 Xi’an,China [2]School of Physics,Xi’an Jiaotong University,710049 Xi’an,China

出　　处：《Journal of Advanced Dielectrics》2024年第3期33-39,共7页先进电介质学报（英文）

基　　金：support from the National Key R&D Program of China(No.2021YFB3201100);National Natural Science Foundation of China(No.52172128);National Natural Science Foundation of China(No.52102146).

摘　　要：In this study,BNBT-KNN-xTa_(2)O_(5)was designed and synthesized,successfully achieving a reduction in the relaxor-ferroelectric phase transition temperature.Synergy between temperature-dependent ferroelectric testing and dielectric spectroscopy confirmed that the depoling temperature gradually decreased with increasing doping concentration.Fitting of the relaxation parameter and freezing temperature substantiated that the incorporation of Ta_(2)O_(5)increased the degree of relaxation in BNBT-KNN-xTa_(2)O_(5),thereby effectively lowering the relaxor-ferroelectric phase transition temperature.

关 键 词：BNT Ta_(2)O_(5) relaxor-ferroelectric behavior 

分 类 号：TM28[一般工业技术—材料科学与工程]