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Correlation between Arrangement of Dielectric Layers and Microwave Dielectric Properties of Mg 0.93 Ca 0.07 TiO 3 −(Ca 0.3 Li 0.14 Sm 0.42 )TiO 3 Ceramics
Author(s) -
Cho Joon Yeob,
Yoon Ki Hyun,
Kim Eung Soo
Publication year - 2003
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2003.tb03471.x
Subject(s) - dielectric , materials science , dielectric loss , diffusion , microwave , analytical chemistry (journal) , temperature coefficient , mineralogy , composite material , chemistry , optoelectronics , thermodynamics , physics , quantum mechanics , chromatography
Effect of geometrical shape and induced thermal strain on the microwave dielectric properties of the layered structure ceramics of Mg 0.93 Ca 0.07 TiO 3 with (Ca 0.3 Li 0.14 Sm 0.42 )TiO 3 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 Mg 2+ and Ti 4+ ions. The dielectric loss quality also decreased with an increase of thermal strain induced to each dielectric layer.