Comparative Dielectric Studies of NaNbO3-Based Lead-Free Relaxor Ceramics and Lead-Containing Relaxors

被引：4
|
作者：
Raevskaya, S. I. [1 ]
Reznitchenko, L. A. [1 ]
Titov, V. V. [1 ]
Raevski, I. P. [1 ]
Malitskaya, M. A. [1 ]
Zakharchenko, I. N. [1 ]
Seredkina, M. A. [1 ]
Dellis, J. -L. [2 ]
机构：
[1] So Fed Univ, Phys Res Inst, Rostov Na Donu 344090, Russia
[2] Univ Picardie Jules Verne, LPMC, F-80039 Amiens, France
来源：
FERROELECTRICS | 2008年 / 371卷
关键词：
Dielectric permittivity; diffuse phase transition; lead-free relaxors;
D O I：
10.1080/00150190802394087
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Complex dielectric permittivity * = ' -i'' of lead-free (Na, Sr, Li)NbO3 ceramic composition exhibiting a relaxor-like dielectric behavior was studied in wide temperature (-180-500C) and frequency (102-106 Hz) range. Some features characteristic of relaxors were observed, namely fulfilment of quadratic and linear Curie-Weiss laws for ' just above and well above the temperature Tm of ' (T) peak respectively, the Vogel-Fulcher scaling of both ' (T) and (T) peaks. However, in contrast to canonical lead-containing relaxors Curie-Weiss temperature is lower than Tm and the scaling parameters differ for ' (T) and (T) suggesting different origin of dielectric relaxation in these two groups of materials.
引用
收藏
页码：63 / 67
页数：5
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