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Bi-based ceramics with pyrochlore structure exhibit interesting dielectric properties such as high dielectric constant and small dielectric loss at high frequency and low firing temperature. Structure and dielectric properties of non-stoichiometric ceramics Bi1.5−xZnNb1.5O7−1.5x (with x = −0.25∼0.6) were investigated. The compounds departured from stoichiomeric compositions lead to structural parameters...
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