Microstructure and Microwave Characteristics of Ba{(Mg, Co)1/3Nb2/3}O3-Based Dielectrics

Shigekazu SUMITA; Makoto KOBAYASHI; Kazuaki SUZUKI; Keizo KAWAMURA; Taro MIURA

doi:10.2109/jcersj.99.649

Microstructure and Microwave Characteristics of Ba{(Mg, Co)_1/3Nb_2/3}O₃-Based Dielectrics

Shigekazu SUMITA, Makoto KOBAYASHI, Kazuaki SUZUKI, Keizo KAWAMURA, Taro MIURA

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Keywords: Ba{(Mg, Co)_1/3Nb_2/3}O₃, Ba₅Nb₄O₁₅, Microwave dielectric, Perovskite structure, Microstructure

JOURNAL FREE ACCESS

1991 Volume 99 Issue 1152 Pages 649-653

DOI https://doi.org/10.2109/jcersj.99.649

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Abstract

The microstructure of the cubic perovskite Ba{(Mg, Co)_1/3Nb_2/3}O₃-based dielectric has been investigated. The secondary phase was determined to be Ba₅Nb₄O₁₅; this phase was detrimental to the microwave properties of Ba{(Mg, Co)_1/3Nb_2/3}O₃. Eliminating the secondary phase, the precise control of A-site/B-site ratio of the perovskite and long time annealing improved the microwave characteristics.

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