Nd[(Zn1–xCox)0.5Ti0.5]O3 (0≤x≤0.9) microwave dielectric ceramics were prepared by a conventional solid-state route. The effects of Co2+ B-site substitution Zn2+ on the structure and microwave dielectric properties of Nd(Zn0.5Ti0.5)O3 ceramics were extensively investigated. The results showed that a solid solution with the monoclinic perovskite structure was formed in the investigated compositional range. The relative dielectric constant ?r decreased gradually and the temperature coefficient of resonant frequency ?f moved to a positive tendency with the increase of Co substitution. The quality factor Q×f initially increased to a maximum value of 215130 GHz at x=0.3 mol and thereafter declined. The substantial rise of Q×f might be attributed to the improvement of B-site cation ordering. Nd[(Zn0.7Co0.3)0.5Ti0.5]O3 ceramics had good microwave dielectric properties sinteringat 1410℃ for 4 h, ?r=31.2, Q×f=215130 GHz, ?f=?35.7×10?6℃?1.
Jiamao LI Chuangang FAN Lichun YAO Tai QIU
. Effects of Co Substitution on Structure and Microwave Dielectric Properties of Nd(Zn0.5Ti0.5)O3 Ceramics[J]. The Chinese Journal of Process Engineering, 2018
, 18(2)
: 411
-416
.
DOI: 10.12034/j.issn.1009-606X.217275
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