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Dielectric Properties of Ceramics in Ba (Co 1/3 Nb 2/3 )O 3 –Ba(Zn 1/3 Nb 2/3 )O 3 Solid Solution
Author(s) -
Endo Kazuaki,
Fujimoto Kenji,
Murakawa Kyohei
Publication year - 1987
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.1151-2916.1987.tb05746.x
Subject(s) - dielectric , temperature coefficient , analytical chemistry (journal) , ceramic , materials science , annealing (glass) , solid solution , permittivity , dielectric loss , perovskite (structure) , niobium , mineralogy , crystallography , chemistry , metallurgy , optoelectronics , chromatography , composite material
The dielectric properties of the Ba (Co 1/3 Nb 2/3 )O 3 –Ba(Zn 1/3 Nb 2/3 )O 3 system were determined. Ba (Co 1/3 Nb 2/3 )O 3 –Ba(Zn 1/3 Nb 2/3 )O 3 has a complex perovskite structure, a high dielectric constant, a low dielectric loss, and a low temperature coefficient of the resonant frequency. A solid‐solution ceramic with 0.7Ba (Co 1/3 Nb 2/3 )O 3 ·0.3 Ba(Zn 1/3 Nb 2/3 )O 3 has a dielectric constant of K=33.5, Q=11000 at 6.5 GHz, and a temperature coefficient of the resonant frequency of τ f =0 ppm/°C. The temperature coefficient of resonant frequency can be varied by changing the composition. The Q values of the ceramics can be increased by annealing in a nitrogen atmosphere. These ceramics can be used for resonant elements and stabilized oscillators.