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Ferroelectrics Volume 401, 2010 - Issue 1
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SECTION A: THEORIES, MODELING, DOMAINS, PHASE TRANSITIONS AND CRITICAL PHENOMENA

Control of Ferroelectric Aging by Manipulating Point Defects

Huixin Bao Multi-disciplinary Materials Research Center, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China; Ferroic Physics Group, National Institute for Materials Science, Tsukuba, 305-0047, Ibaraki, Japan
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Jinghui Gao Multi-disciplinary Materials Research Center, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China; Ferroic Physics Group, National Institute for Materials Science, Tsukuba, 305-0047, Ibaraki, Japan
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Dezhen Xue Multi-disciplinary Materials Research Center, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China; Ferroic Physics Group, National Institute for Materials Science, Tsukuba, 305-0047, Ibaraki, Japan
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Chao Zhou Multi-disciplinary Materials Research Center, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China; Ferroic Physics Group, National Institute for Materials Science, Tsukuba, 305-0047, Ibaraki, Japan
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Lixue Zhang Multi-disciplinary Materials Research Center, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China; Ferroic Physics Group, National Institute for Materials Science, Tsukuba, 305-0047, Ibaraki, Japan
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Wenfeng Liu Multi-disciplinary Materials Research Center, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China; Ferroic Physics Group, National Institute for Materials Science, Tsukuba, 305-0047, Ibaraki, Japan
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Xiaobing Ren Multi-disciplinary Materials Research Center, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China; Ferroic Physics Group, National Institute for Materials Science, Tsukuba, 305-0047, Ibaraki, Japan
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Pages 45-50 | Received 23 Aug 2009, Accepted 02 Oct 2009, Published online: 01 Dec 2010
 
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Abstract

In the present work, we systematically studied the aging effect of both ferroelectric single crystals and polycrystals to study how to control aging effect. We found that such hybrid-doped BaTiO3 single crystals showed obvious aging effect only when the concentration of the acceptor K+ is higher than that of the donor; when the donor F− concentration is higher than the acceptor K+, the K-F doped BaTiO3 showed almost no aging effect. Similar results were obtained in La-Mn doped BaTiO3 polycrystals. With the increase of the concentration of donor La3+ in 0.5%Mn-BaTiO3 ceramics, the aging effect gradually becomes weaker and finally disappears. Our result suggests that donor doping is an effective way of controlling the aging effect.

Acknowledgments

We thank X. Q. Ke, X. D. Ding, S. Yang and Y. Wang for helpful discussions. This work was supported by the JSPS for Grand No. P05661, National Basic Research Program of China under Grand (No. 2004CB619303, 2010CB631003), National Natural Science Foundation of China (50720145101), and 111 project of China.

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