Abstract

In this work, Nd[(Zn0.7Co0.3)0.5Ti0.5]O3 (NZCT) powders with high reactivity were synthesized by the ethylenediaminetetraacetic acid (EDTA) precursor method in which EDTA acted as a chelating agent. Single-phase NZCT and dense ceramic with about 98.2% of theoretical density were readily developed via sintering the fine powders at 1250 °C for 3 h. X-ray diffraction (XRD) analysis confirmed the formation of single-phase NZCT at 700 °C for 2 h without any intermediate phase. Transmission electron microscopy (TEM) micrograph showed nanocrystalline particles in the range 30–70 nm. The sintered Nd[(Zn0.7Co0.3)0.5Ti0.5]O3 ceramics at 1250 °C for 3 h exhibited uniform microstructure and excellent microwave dielectric properties of εr = 35.66, Q × f = 254200 GHz and τf = −28.3 ppm/oC, indicating that the present developed ceramics might be promising materials for modern communication techniques.

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