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Ferroelectrics Volume 463, 2014 - Issue 1: Proceedings of the Thirteenth International Meeting on Ferroelectricity (IMF-13)
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Section C: Characterization of Ceramics

Effects of Defects on Relaxation Behavior of Nd-Doped BCZT Ceramics

P. YongSchool of Materials Science & Engineering, Xihua University, Chengdu610039, China
,
D. ShihuaSchool of Materials Science & Engineering, Xihua University, Chengdu610039, ChinaCorrespondence[email protected]
,
S. TianxiuSchool of Materials Science & Engineering, Xihua University, Chengdu610039, China
,
Z. QianSchool of Materials Science & Engineering, Xihua University, Chengdu610039, China
&
Z. ZuoweiSchool of Materials Science & Engineering, Xihua University, Chengdu610039, China
Pages 83-89 | Received 02 Sep 2013, Accepted 17 Sep 2013, Published online: 02 May 2014
 
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Abstract

(Ba0.92−xCa0.08Ndx)(Ti0.82Zr0.18)O3 (0 ≤ x ≤ 0.02) were prepared through solid reaction route. The relaxor behavior of (Ba0.92-xCa0.08Ndx)(Ti0.82Zr0.18)O3 have been studied. When x = 0, a broad dielectric peak with frequency dispersion occurred, with increasing Nd3+ content, the relaxation and diffuseness degree was strengthened. Atomic computer simulation has been used to predict the energy for different defect associates [Nd•Ba + NdTi′] and [4Nd•Ba + VTi′′′′]. Local random field induced by such off-center Nd3+ ions and [Nd•Ba + NdTi′] and [4Nd•Ba + VTi′′′′] gives rise to the relaxor behavior.

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