Production of Ba(Zn1/3Nb2/3)O3 ceramic by coprecipitation

被引：4

作者：

Mergen, A. ^{[1
]}

Sert, D. ^{[1
]}

机构：

[1] Marmara Univ, Met & Mat Engn Dept, TR-34722 Istanbul, Turkey

来源：

MATERIALS CHARACTERIZATION | 2012年 / 63卷

关键词：

Barium zinc niobate; Perovskite ceramics; Coprecipitation; Dielectric properties; MICROWAVE DIELECTRIC-PROPERTIES; NONSTOICHIOMETRY; ORDER;

D O I：

10.1016/j.matchar.2011.08.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A simple coprecipitation technique was successfully applied for the preparation of pure, nanosized, single phase Ba(Zn1/3Nb2/3)O-3 microwave dielectric ceramic powders. Barium, zinc and niobium ions were precipitated as hydroxide under basic conditions using aqueous sodium hydroxide solution and single phase Ba(Zn1/3Nb2/3)O-3 ceramic was produced at 800 degrees C. TEM revealed an average particle size of around 100 nm for the calcined powders. The samples sintered at 1250 degrees C for 4 h had a relatively high density and fine grain sizes. While the dielectric constant of ceramics varied between 37.5 and 39.8 the dielectric losses were lower than 4 x 10(-3) at frequency range of 1 kHz-2 MHz between 20 and 200 degrees C. (C) 2011 Elsevier Inc. All rights reserved.

引用

页码：63 / 69

页数：7

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