Phase Transition Characteristics in A-Site La3+ Modified Bi-Layered Aurivillius-Type Structure SrBi2Nb2O9 Ferroelectric Ceramics

被引：3
作者：
Guerra, J. D. S. [1 ,2 ]
Reis, I. C. [2 ,3 ]
Silva, A. C. [2 ,3 ]
Araujo, E. B. [3 ]
Guo, R. [1 ]
Bhalla, A. S. [1 ]
机构：
[1] Univ Texas San Antonio, Dept Elect & Comp Engn, Coll Engn, Multifunct Elect Mat & Devices Res Lab, San Antonio, TX 78249 USA
[2] Univ Fed Uberlandia, Inst Fis, Grp Ferroeletr & Mat Multifunc, BR-38400902 Uberlandia, MG, Brazil
[3] Univ Estadual Paulista, Dept Quim & Fis, BR-15385000 Ilha Solteira, SP, Brazil
来源：
INTEGRATED FERROELECTRICS | 2015年 / 166卷 / 01期
基金：
美国国家科学基金会;
关键词：
Aurivillius; dielectric permittivity; phase transition; relaxors; BA;
D O I：
10.1080/10584587.2015.1092217
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The phase transition characteristics have been investigated in lanthanum modified bismuth layer structured SrBi2Nb2O9 (SBN) ferroelectric ceramics, obtained from the conventional sintering method. In particular, structural, ferroelectric and dielectric properties have been analyzed taking into account the influence of the lanthanum content. Results of Raman spectroscopy as well as dielectric response suggested an evolution from normal ferroelectric-paraelectric phase transition to a relaxor-like behavior of the SLBN system, with the increase of the lanthanum concentration. The compositional cationic disorder has been considered as the main cause for the observed behavior, affecting the evolution of the long-rage polar ordering in the studied system.
引用
收藏
页码：150 / 157
页数：8
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