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

被引：7
|
作者：
Yong, P. [1 ]
Shihua, D. [1 ]
Tianxiu, S. [1 ]
Qian, Z. [1 ]
Zuowei, Z. [1 ]
机构：
[1] Xihua Univ, Sch Mat Sci & Engn, Chengdu 610039, Peoples R China
来源：
FERROELECTRICS | 2014年 / 463卷 / 01期
基金：
中国国家自然科学基金;
关键词：
(Ba0.92-xCa0.08Ndx)(Ti0.82Zr0.18)O3 ceramics; defects; diffuse phase transitions; dielectric relaxation; BARIUM-TITANATE; SIMULATION; BATIO3; OXIDES;
D O I：
10.1080/00150193.2014.891923
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
(Ba0.92-xCa0.08Ndx)(Ti0.82Zr0.18)O-3 (0 <= x <= 0.02) were prepared through solid reaction route. The relaxor behavior of (Ba0.92-xCa0.08Ndx)(Ti0.82Zr0.18)O-3 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(center dot) + Nd-Ti '] and [4Nd(Ba)(center dot) + V-Ti '('')']. Local random field induced by such off-center Nd3+ ions and [Nd-Ba(center dot) + Nd-Ti '] and [4Nd(Ba)(center dot) + V-Ti '('')'] gives rise to the relaxor behavior.
引用
收藏
页码：83 / 89
页数：7
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