Divide line between relaxor, diffused ferroelectric, ferroelectric and dielectric

被引：76
|
作者：
Rivera, I. [1 ,2 ]
Kumar, Ashok [1 ,2 ]
Ortega, N. [1 ,2 ]
Katiyar, R. S. [1 ,2 ]
Lushnikov, Sergey [3 ]
机构：
[1] Univ Puerto Rico, Dept Phys, San Juan, PR 00931 USA
[2] Univ Puerto Rico, Inst Funct Nanomat, San Juan, PR 00931 USA
[3] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia
来源：
SOLID STATE COMMUNICATIONS | 2009年 / 149卷 / 3-4期
关键词：
Relaxor ferroelectrics; Dielectric relaxation; PHASE-TRANSITION; POLARIZATION; BEHAVIOR; RELAXATION; CERAMICS;
D O I：
10.1016/j.ssc.2008.10.026
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The dielectric spectroscopic studies of relaxor ferroelectric Ba(Ti0.70Sn0.30)O-3 (BTS30), diffused ferroelectric Ba(Ti0.70Sn0.20)O-3 (BTS20), classical ferroelectric BaTiO3 (BT0), and normal dielectric Ba(Fe0.50Ta0.50O3) (BFT) were carried out in the temperatures similar to 100 K-650 K, and frequencies similar to 100 Hz-1 MHz, which showed relaxor behavior at 130 K with typical 30 K frequency dispersion, perfect diffused ferroelectric character at 190 K, classical ferroelectric, and dielectric relaxation at 450 K-550 K respectively. A divide line was sketched between the relaxors, ferroelectrics and normal dielectrics based on the Maxwell-Wagner space charge model. The impedance spectroscopy and ac conductivity spectroscopy were carried out to explain the relaxor and pseudo relaxor behavior. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：172 / 176
页数：5
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