Crystalline structure and dielectric properties of Li1+x-yNb1-x-3yTix+4yO3 M-phase solid solutions

被引：98

作者：

Borisevich, AY ^{[1
]}

Davies, PK ^{[1
]}

机构：

[1] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2002年 / 85卷 / 03期

关键词：

D O I：

10.1111/j.1151-2916.2002.tb00134.x

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：

The structure and dielectric properties of the so-called M-phase solid solutions in the Li(2)O-Nb(2)O(5)-TiO(2) system have been investigated. Detailed studies of the lattice parameters of these phases agree well with structure models based on inter-growths of LiNbO(3) slabs with a titanium-rich corundum-type layer. The relative permittivity ranges from similar to80 to similar to55; microwave quality factors increase with the titanium content, reaching values of Qxf = 9000 at 6 GHz. The temperature coefficient of the resonant frequency changes sign within the solid solution region, thus permitting tunability to a zero value. All the compositions can be sintered to high density at temperatures less than or equal to1100degreesC.

引用

页码：573 / 578

页数：6

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