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Erschienen in:
27.08.2015
Influence of soaking time on microstructures and dielectric properties of ZnO–MgO–TiO2–CaO ceramics
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 12/2015
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Abstract
ZnO–MgO–TiO2–CaO (ZMTC) ceramics were prepared by a conventional solid-state method and sintered at 1150 °C for various soaking times. The density, particle sizes and dielectric constant simultaneously increase with the soaking time. On the contrary, the dielectric loss of ZMTC ceramics declines with the soaking time. The XRD analysis revealed that CaTiO3 phase nearly appears with prolonging the sintering time. With increasing soaking time, the density and εr values increased, saturating at 1150 °C for 7 h with excellent dielectric properties of εr = 22.4, tanδ = 0.6 × 10−4, and TCF = 24.8 ppm/°C.