Effects of BiAlO3-doping on dielectric and ferroelectric properties of 0.93Na0.5Bi0.5TiO3-0.07BaTiO3 lead-free ceramics

被引：21
作者：
Wang, Jian [1 ]
Chen, Xiao-ming [1 ]
Zhao, Xu-mei [1 ]
Liang, Xiao-xia [1 ]
Zhou, Jian-ping [1 ]
Liu, Peng [1 ]
机构：
[1] Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710719, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2015年 / 67卷
基金：
中国国家自然科学基金;
关键词：
Ceramics; X-ray diffraction; Ferroelectricity; Dielectric properties; ELECTRICAL-PROPERTIES; PIEZOELECTRIC PROPERTIES; PHASE-TRANSITION; IMPEDANCE SPECTROSCOPY; TEMPERATURE; SYSTEM; STRAIN; BEHAVIOR; DIAGRAM;
D O I：
10.1016/j.materresbull.2015.03.012
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
(1-x)(0.93Na(0.5)Bi(0.5)TiO(3)-0.07BaTiO(3))-xBiAlO(3) (BNBT-xBA, x=0, 0.01, 0.02, 0.06) lead-free ceramics were synthesized via a conventional solid state reaction method. Crystallite structure, microstructure, dielectric and ferroelectric properties of the BNBT-xBA ceramics were studied in detail. X-ray diffraction results show that all ceramics exhibit typical diffraction peaks of ABO(3) perovskite structure. Scanning electron microscope images show that all samples have fine microstructures. Both Curie temperature and maximum dielectric constant vary with the change in the BiAlO3 amounts. The values of hysteresis loop squareness were calculated to be 1.26, 0.81, 0.51 and 0.36 for the ceramics with x= 0, 0.01, 0.02 and 0.06, respectively, indicating a decreased switching behavior of polarization. The changes in dielectric and ferroelectric properties of the ceramics are also discussed. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：94 / 101
页数：8
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