Crystal structure refinement and microwave dielectric properties of new low dielectric loss AZrNb2O8 (A: Mn, Zn, Mg and Co) ceramics

被引：126

作者：

Ramarao, S. D. ^{[1
]}

Murthy, V. R. K. ^{[1
]}

机构：

[1] Indian Inst Technol Madras, Dept Phys, Microwave Lab, Madras 600036, Tamil Nadu, India

来源：

SCRIPTA MATERIALIA | 2013年 / 69卷 / 03期

关键词：

Rietveld refinement; Packing fraction; Octahedral distortions; Microwave dielectric properties; W CERAMICS; NI; FREQUENCIES; MO;

D O I：

10.1016/j.scriptamat.2013.04.018

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effects of substituting different cations (Mn, Zn, Mg and Co) at the A-site of AZrNb(2)O(8) compounds on structural parameters such as packing fraction and B-site octahedral distortion were studied using X-ray powder diffraction in conjunction with Rietveld refinement. Variations in the dielectric constant (epsilon(r)) were explained by the ionic polarizability of the compositions. The quality factor (Q x f) and temperature coefficient of resonant frequency (tau(f)) were correlated with the packing fraction and B-site octahedral distortions (delta) in these compositions, respectively. (c) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：274 / 277

页数：4

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