Large nonlinear dielectric behavior in BaTi1-xSnxO3

Pengrong Ren; Zicheng Liu; Qian Wang; Biaolin Peng; Shanming Ke; Huiqing Fan; Gaoyang Zhao

doi:10.1038/s41598-017-07192-x

Large nonlinear dielectric behavior in BaTi_1-xSnxO₃

Sci Rep. 2017 Jul 27;7(1):6693. doi: 10.1038/s41598-017-07192-x.

Authors

Pengrong Ren¹, Zicheng Liu², Qian Wang², Biaolin Peng³, Shanming Ke⁴, Huiqing Fan⁵, Gaoyang Zhao²

Affiliations

¹ Shaanxi Province Key Laboratory for Electrical Materials and Infiltration Technology, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an, 710048, P.R. China. renpengrongxaut@126.com.
² Shaanxi Province Key Laboratory for Electrical Materials and Infiltration Technology, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an, 710048, P.R. China.
³ School of Physical Science & Technology, Guangxi Key Laboratory for Relativistic Astrophysics, Guangxi University, Nanning, 530004, P.R. China.
⁴ College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, P.R. China.
⁵ State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, 710072, P.R. China.

Abstract

BaTi_1-xSn_xO₃ (BTSn, 0 ≤ x ≤ 0.30) ceramics were prepared by both the conventional sintering (CS) and sparking plasma sintering (SPS). Composition, temperature and grain size dependences of the nonlinear dielectric behaviors were systematically studied. BTSn was found to have especially large tunability (≥90%), which is larger than most other Pb-free systems, and is comparable to Pb-based relaxors. The high dielectric tunability in BTSn is attributed to its specific domain structures. Besides, temperature dependent tunability of BTSn presents a dispersed behavior and the dispersion is enhanced with the increase of Sn⁴⁺ concentrations, which is explained by the compositional fluctuation model.

Publication types

Research Support, Non-U.S. Gov't