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

页码：554 / 563

页数：10

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