Affiliation:
1. Guangxi Teachers Education University
2. China University of Geosciences
3. Huazhong University of Science and Technology
Abstract
(1-x) Ca2/5Sm2/5TiO3-x Li1/2Nd1/2TiO3 (CSLNT) ceramics, suitable for use in resonators or
filters at microwave frequency, have a high εr and a low temperature coefficient of resonant frequency.
The effects of calcinations on the microwave dielectric properties of CSLNT were studied. The CSLNT
(x = 0.3) ceramics sintered at 1300oC for 3 h showed microwave properties with εr of 92, Qf of 5060 GHz
and τf of 7.5 ppm/oC. The microwave dielectric properties of CSLNT (x = 0.3) ceramics were also
improved by soft chemistry methods such as citric acid gel route and ethylenediaminetetraacetic acid
(EDTA) chelating method. The excellent microwave properties with εr = 96, Qf = 6290 GHz and τf = 6
ppm/oC were obtained by EDTA chelating method for CSLNT (x = 0.3) ceramics.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
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