Abstract
Microwave dielectric properties of Nd[(Zn1−xCox)0.5Ti0.5]O3 (0.025≤x≤0.1) ceramics have been investigated. Solid solutions were formed for the ceramic system in the given compositional range. With x increasing from 0.025 to 0.1, dielectric constant value (ɛr) decreased slightly from 33.4 to 32.2, and τf value increased from −30.3 to −31.9ppm/°C. Dielectric loss of the Nd(Zn0.5Ti0.5)O3 ceramics could be decreased by the small amount of Co substitution. Excellent microwave dielectric properties of ɛr=32.6, Q×f=185,300GHz and τf=−31.3ppm/°C were obtained for the Nd[(Zn0.925Co0.075)0.5Ti0.5]O3 (x=0.075) ceramics sintered at 1390°C for 4h.
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