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Polycrystalline nonstoichiometric Ba(Co 1/3 Nb 2/3 )O 3 (BCN) materials have been synthesized and investigated. Deviations from stoichiometry have been shown to lead to the formation of crystalline Ba 6 CoNb 9 O 30 (barium deficiency) and Ba 8 CoNb 6 O 24 (cobalt deficiency). The effect of phase composition on the microwave dielectric properties of BCN has been studied. The results demonstrate that the dielectric properties of BCN-based materials can be tuned by varying cobalt content. The materials obtained are high- Q microwave dielectrics with temperature-stable properties.
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Белоус et al. (2010) studied this question.
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