Issue 110, 2016
From the journal:

RSC Advances

Mechanism of aging effect in hybrid-doped BaTiO3 ceramics: electronegativity and ionic radius†

Dingyue Hu,a   Sen Yang,a   Chao Zhou,*a   Lixue Zhang,*a   Wenfeng Liu,b   Wei Chenb  and  Xiaobing Ren*ac  

* Corresponding authors

a Multi-Disciplinary Research Center, Frontier Institute of Science and Technology, State Key Laboratory for Mechanical Behavior of Materials, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Science, Xi'an Jiaotong University, Xi'an 710049, China
E-mail: chao.zhou@mail.xjtu.edu.cn, lxzhang@mail.xjtu.edu.cn, ren.xiaobing@nims.go.jp

b State Key Lab of Electrical Institution and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China

c Ferroic Physics Group, National Institute for Materials Science, Tsukuba, 305-0047 Ibaraki, Japan

Abstract

Physical properties of ferroelectric materials are usually tailored (for high operation temperature, temperature stability, etc.) through introduction of acceptor and donor dopants that usually induce different aging phenomena. Hence it is of great interest to understand the aging behavior in the presence of both acceptors and donors. In this work, we report the aging effect in hybrid-doped BaTiO3 ceramics, reflected by the time-dependent change of polarization (P)–electric field (E) hysteresis loops in these cases with different dopant combinations of acceptors (Mn3+, Fe3+, Co3+) and donors (Nb5+, La3+). The results indicate that the electronegativity and the ionic radius of acceptors, rather than the substitution site of the donors, play the key role in the formation of defect pairs which dominates the aging effect in hybrid-doped ferroelectrics. Finally, we propose a unified microscopic mechanism for the aging phenomena in hybrid-doped ferroelectrics, and it provides direct instructions for manipulating the aging effect in hybrid-doped ferroelectric materials.

Graphical abstract: Mechanism of aging effect in hybrid-doped BaTiO3 ceramics: electronegativity and ionic radius

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Article information

DOI
https://doi.org/10.1039/C6RA23546H
Article type
Paper
Submitted
22 Sep 2016
Accepted
07 Nov 2016
First published
07 Nov 2016

RSC Adv., 2016,6, 109030-109035

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Mechanism of aging effect in hybrid-doped BaTiO3 ceramics: electronegativity and ionic radius

D. Hu, S. Yang, C. Zhou, L. Zhang, W. Liu, W. Chen and X. Ren, RSC Adv., 2016, 6, 109030 DOI: 10.1039/C6RA23546H

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