Investigating the physical meanings of diffused phase transition models

被引：5
作者：
Hong, Cheng-Shong [1 ]
Chu, Sheng-Yuan [2 ,3 ,4 ,5 ]
Tsai, Cheng-Che [6 ]
Su, Wen-Chang [2 ]
机构：
[1] Natl Kaohsiung Normal Univ, Dept Elect Engn, Kaohsiung 824, Taiwan
[2] Natl Cheng Kung Univ, Dept Elect Engn, Tainan 70101, Taiwan
[3] Natl Cheng Kung Univ, Adv Optoelect Technol Ctr, Tainan 701, Taiwan
[4] Natl Cheng Kung Univ, Inst Nanotechnol & Microsyst Engn, Tainan 701, Taiwan
[5] Natl Cheng Kung Univ, Ctr Micro Nano Sci & Technol, Tainan 700, Taiwan
[6] Tung Fang Design Univ, Dept Elect Engn & Comp Sci, Kaohsiung 829, Taiwan
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 05期
关键词：
Diffused phase transition; Relaxor; Ferroelectric; Model; DIELECTRIC-PROPERTIES; RELAXOR BEHAVIOR; BABI4TI4O15; CERAMICS; MICROSTRUCTURE; FERROELECTRICS; STATE;
D O I：
10.1016/j.jallcom.2010.11.003
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The empirical laws, epsilon = epsilon(m)/[1 + (T - T(m))(gamma)/2 sigma(2)] and epsilon = epsilon(m)/{1 + [(T - T(m))/Delta](xi)}, proposed by Burfoot et al. and Eiras et al. are usually used to describe the dielectric diffused characteristics of relaxor ferroelectric materials. In this study, we continue our previous work to present the physical and mathematical meanings of the parameters in these laws. Based on the experimental results in the (1 - x)Pb(Fe(2/3)W(1/3))O(3)-xPbTiO(3) relaxor system and theoretical modelling analysis, it is shown that the law proposed by Eiras is more suitable to explain the behaviour of both more complete relaxor systems and incomplete relaxor systems. (C) 2010 Elsevier B.V. All rights reserved.
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页码：2216 / 2220
页数：5
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