Correlation between Arrangement of Dielectric Layers and Microwave Dielectric Properties of Mg0.93Ca0.07TiO3−(Ca0.3Li0.14Sm0.42)TiO3 Ceramics |
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| Authors: | Joon Yeob Cho Ki Hyun Yoon Eung Soo Kim |
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| Affiliation: | Department of Ceramic Engineering, Yonsei University, Seoul, 120-749, Korea;Department of Materials Engineering, Kyonggi University, Suwon, 442-760, Korea |
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| Abstract: | Effect of geometrical shape and induced thermal strain on the microwave dielectric properties of the layered structure ceramics of Mg0.93Ca0.07TiO3 with (Ca0.3Li0.14Sm0.42)TiO3 was investigated as a function of the number of dielectric layers. The dielectric constant and the temperature coefficient of resonant frequency (TCF) were not changed significantly with the number of dielectric layers but only depended on the net compositional ratio. However, the dielectric loss quality was affected by the number of interfaces between dielectric layers, which had a partial composition inhomogeneity due to the diffusion of Mg2+ and Ti4+ ions. The dielectric loss quality also decreased with an increase of thermal strain induced to each dielectric layer. |
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| Keywords: | dielectric materials/properties microwaves interfaces |
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