Microwave dielectric properties of Li2M2(MoO4)3 (M = Co, Ni) for LTCC applications

被引：3

作者：

Huang C.-L. ^{[1
]}

Liou J.-N. ^{[1
]}

Tsai M.-H. ^{[1
]}

Huang W.-C. ^{[2
]}

机构：

[1] Department of Electrical Engineering, National Cheng Kung University, Tainan City

[2] Department of Resource Engineering, National Cheng Kung University, Tainan City

来源：

International Journal of Ceramic Engineering and Science | 2020年 / 2卷 / 03期

关键词：

dielectric materials/properties; electroceramics; microwaves;

D O I：

10.1002/ces2.10044

中图分类号：

TM21 [绝缘材料、电介质及其制品];

学科分类号：

摘要：

Two low-firing Li2M2(MoO4)3 (M = Co, Ni) dielectrics were prepared, and their microwave dielectric properties were investigated. The XRD patterns indicated both samples crystallized in an orthorhombic structure with different space groups. The microstructures, lattice parameters, and Raman spectra of these ceramics were also systematically studied. The microwave dielectric properties were obtained with εr ~ 9.1, Q × f ~ 34 000 GHz and τf ~ −72 ppm/°C for Li2Co2(MoO4)3 at 840°C, εr ~ 9.6, Q × f ~ 28 000 GHz and τf ~ −71 ppm/°C for Li2Ni2(MoO4)3 at 660°C. With 0.05 mol% Zn substitution, excellent microwave dielectric properties (εr ~ 10.9, Q × f ~ 56 000 GHz and τf ~ −62 ppm/°C) can be obtained for Li2(Ni0.95Zn0.05)2(MoO4)3 at 660°C, indicating a very promising dielectric for LTCC or ULTCC applications at high frequencies. © 2020 The Authors. International Journal of Ceramic Engineering & Science published by Wiley Periodicals, Inc. on behalf of American Ceramic Society.

引用

页码：130 / 139

页数：9

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