Crystal structure and electrical behavior of the new ceramic Ba0.7Na0.3Ti0.7Nb0.3O3

被引：20
|
作者：
Khemakhem, S
Yahyaoui, S
Ben Hassen, R [1 ]
Khemakhem, H
Ben Salah, A
机构：
[1] Fac Sci Sfax, Lab Sci Mat & Environm, Sfax 3038, Tunisia
[2] ENIS, Lab Etat Solide, Sfax 3038, Tunisia
来源：
SOLID STATE SCIENCES | 2003年 / 5卷 / 02期
关键词：
ceramic; perovskite; Rietveld method; relaxor behavior;
D O I：
10.1016/S1293-2558(03)00008-6
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The crystal structure of the new Perovskite ceramic Ba0.7Na0.3Ti0.7Nb0.3O3 has been refined by the Rietveld method from X-ray powder diffraction data. The title compound crystallizes at room temperature in the cubic space group Pm (3) over barm with a = 3.9849(l) Angstrom and Z = 1. The Rietveld refinement converged to the final crystal structure and profile indicators R-wp = 21.0, R-B = 5.3. A ferro-paraelectric phase transition was detected by differential scanning calorimetry and dielectric measurements showing a relaxor behavior in this material. (C) 2003 Editions scientifiques et medicales Elsevier SAS. All rights reserved.
引用
收藏
页码：367 / 371
页数：5
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