Enhanced dielectric and tunable properties of Ba-doped (Pb,La)(Zr,Sn,Ti)O3 antiferroelectric ceramics

• Published in: Journal of materials science. Materials in electronics Vol. 31; no. 19; pp. 17013 - 17017
• Main Authors: Wang, Xiucai, Cai, Weiqiang, Xiao, Ze, Yu, Xinmei, Chen, Jianwen, Yang, Tongqing
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.10.2020; Springer Nature B.V
• Subjects: Antiferroelectricity; Barium; Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Curie temperature; Curves; Dielectric properties; Electric properties; Lead; Materials Science; Optical and Electronic Materials; Solid phases; Tin; Zirconium
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-020-04258-x

In this work, a simple method to improve the dielectric tunability of antiferroelectric ceramics was introduced, and (Pb 0.97− x La 0.02 Ba x )(Zr 0.50 Sn 0.40 Ti 0.10 )O 3 ( x  = 0.08, 0.09, 0.10) antiferroelectric ceramics were prepared by conventional solid-state route. The effect of Ba-modification on phase structure and electric properties was systematically investigated. The results revealed that the barium content contributed to the decline of the Curie temperature and enhanced dielectric tunable performance. All compositions exhibited butterfly curve, and a high tunability of 48.89% at E AF and 53.02% at E FA was obtained in (Pb 0.87 La 0.02 Ba 0.10 )(Zr 0.50 Sn 0.40 Ti 0.10 )O 3 . In addition, the ε max / ε min ratio was up to 25.32, making it a promising candidate for nonlinear tunable devices.