Influence of sintering temperature on microwave dielectric property and crystal structure of corundum-structured Mg4NbSbO9 ceramic

被引：9

作者：

Kan, Akinori ^{[1
]}

Ogawa, Hirotaka ^{[1
]}

机构：

[1] Meijo Univ, Fac Sci & Technol, Tempaku Ku, Nagoya, Aichi 4688502, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 468卷 / 1-2期

关键词：

X-ray diffraction; Dielectric response; BOND-VALENCE; REFINEMENT;

D O I：

10.1016/j.jallcom.2008.01.002

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 relationships between the influence of the sintering temperature on the microwave dielectric properties and crystal structure of Mg4NbSbO9 (MNS) ceramics with corundum structure were investigated in this study. From the XRPD patterns, it was found that the MgO compound was identified as a secondary phase in the XRPD patters of MNS ceramic when the samples were sintered at the sintering temperatures higher than 1500 degrees C because of the vaporization of Sb in MNS ceramic. The dielectric constants of MNS ceramic increased from 10 to 13 in the temperature range of 1375-1500 degrees C, whereas those of MNS ceramic decreased at the sintering temperatures above 1550 degrees C. Such a decrease in Q:f values may be related to the vaporization of Sb and the formation of a secondary phase. The temperature coefficient of resonant frequency was range from -56 to -46 ppm/degrees C. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：338 / 342

页数：5

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