Synthesis and microwave dielectric properties of Sr3Zn1-xMgxNb2O9 phases

被引：19
|
作者：
Thirumal, M
Jawahar, IN
Surendiran, KP
Mohanan, P
Ganguli, AK [1 ]
机构：
[1] Indian Inst Technol, Dept Chem, New Delhi 110016, India
[2] CSIR, Reg Res Lab, Thiruvananthapuram 695019, Kerala, India
[3] Cochin Univ Sci & Technol, Dept Elect, Cochin 682022, Kerala, India
来源：
MATERIALS RESEARCH BULLETIN | 2002年 / 37卷 / 01期
关键词：
ceramics; electronic materials; oxides; X-ray diffraction; dielectric properties;
D O I：
10.1016/S0025-5408(01)00812-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Oxides of the type, Sr3Zn1-xMgxNb2O9 (0 less than or equal to x less than or equal to 1) have been obtained by the ceramic method. These oxides crystallize in the hexagonal cell corresponding to ordered triple perovskites. Sintered disks show nearly frequency-independent dielectric constant for all the compositions. Compositions sintered at 1425degreesC yield dielectric constant of 20-22 at similar to6 GHz, with quality factor ranging from 1300 to 1500. Sr3Zn0.5Mg0.5Nb2O9 shows a very low temperature coefficient of resonant frequency (tau(f)) of +4 ppm/degreesC. (C) 2002 Elsevier Science Ltd. All rights reserved.
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收藏
页码：185 / 191
页数：7
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