Impedance Spectroscopy, Broadband, and Microwave Dielectric Properties of Mechanically Alloyed Ba5Nb4O15 Ceramics

被引：6
|
作者：
Kumar, Chikkala Anil [1 ]
Pamu, Dobbidi [1 ]
Josephine, Sylvester [2 ]
机构：
[1] Indian Inst Technol Guwahati, Dept Phys, Gauhati 781039, India
[2] Indian Inst Technol Guwahati, Dept Elect & Elect Engn, Gauhati 781039, India
来源：
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2016年 / 13卷 / 03期
关键词：
TEMPERATURE; ZN;
D O I：
10.1111/ijac.12504
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Ba5Nb4O15 (BNO) ceramics were synthesized by the mechanical alloying method. The transmission electron microscope images of BNO powders revealed rod-shaped grains. Mechanically alloyed BNO exhibited maximum density of 97.3% and is explained on the basis of Herring's scaling law. Both the dielectric constant and loss tangent show a stable response up to 0.2 GHz. Further, the dielectric response of BNO ceramics measured above 350 degrees C shows relaxation behavior and is explained using Havriliak-Negami equation. The obtained stable dielectric response of BNO is suitable for type I capacitor and dielectric resonator applications.
引用
收藏
页码：554 / 563
页数：10
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