ZnLi2/3Ti4/3O4: A new low loss spinel microwave dielectric ceramic

被引：103

作者：

Zhou, Huanfu ^{[1
]}

Liu, Xiaobin ^{[1
]}

Chen, Xiuli ^{[1
]}

Fang, Liang ^{[1
]}

Wang, Yiliang ^{[1
]}

机构：

[1] Guilin Univ Technol, State Key Lab Breeding Base Nonferrous Met & Spec, Key Lab Nonferrous Mat & New Proc Technol, Minist Educ, Guilin 541004, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2012年 / 32卷 / 02期

关键词：

Firing; X-ray methods; Dielectric properties; Spinels; LTCC APPLICATIONS; BA(ZN1/3NB2/3)O-3 CERAMICS; SINTERING TEMPERATURE; ADDITIVES; MIXTURES; OXIDES; SYSTEM; SI;

D O I：

10.1016/j.jeurceramsoc.2011.08.036

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：

A new low loss spinel microwave dielectric ceramic with composition of ZnLi2/3Ti4/3O4 was synthesized by the conventional solid-state ceramic route. The ceramic can be well densified after sintering above 1075 degrees C for 2 h in air. X-ray diffraction data show that ZnLi2/3Ti4/3O4 ceramic has a cubic structure [Fd-3m (227)] similar to MgFe2O4 with lattice parameters of a = 8.40172 angstrom, V=593.07 angstrom(3), Z=8 and rho=4.43 g/cm(3). The best microwave dielectric properties can be obtained in ceramic with relative permittivity of 20.6, Q x f value of 106,700 GHz and tau(f) value of -48 ppm/degrees C. The addition of BaCu(B2O5) (BCB) can effectively lower the sintering temperature from 1075 degrees C to 900 degrees C and does not induce much degradation of the microwave dielectric properties. Compatibility with Ag electrode indicates that the BCB added ZnLi2/3Ti4/3O4 ceramics are good candidates for LTCC applications. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：261 / 265

页数：5

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