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Solid solutions of Bi 3 (Nb 1−x Ta x )O 7 (x=0.0, 0.3, 0.7, 1) were synthesized using solid state reaction method and their microwave dielectric properties were first reported. Pure phase of fluorite-type could be obtained after calcined at 700°C(2h) −1 between 0≤x≤1 and Bi 3 (Nb 1−x Ta x )O 7 ceramics could be well densified...
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