Preparation, Performances and Reaction Process of NiZrNb₂O₈ Microwave Dielectric Ceramics

Abstract:

Microwave dielectric ceramics have great potential applications in the fields of modern communication technology. However, the effects of processing of solid reaction on the crystal structure and properties of NiZrNb₂O₈ has not been reported. In this paper, the NiZrNb₂O₈ ceramic was prepared using different raw materials. The solid state reaction process, crystal structure, and dielectric properties of the NiZrNb₂O₈ ceramics were investigated. The X-ray diffractometer (XRD) results showed that the solid state reaction of NiZrNb₂O₈ could be divided into two steps using NiO, ZrO₂ and Nb₂O₆ as raw materials. Scanning electron microscope (SEM) analysis results showed that the surface of NiZrNb₂O₈ prepared from NiNb₂O₆ and ZrO₂ was more compact. The optimal density of the samples reached 99.28% of the theoretical value. And the dielectric constant (ε_r), quality factor (Q×f), temperature coefficient of resonant (τ_f) reached 23.6, 37237 GHz, -7.796 ppm/°C, respectively.

• Periodical: Solid State Phenomena (Volume 281)
• Pages: 591-597
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.281.591
• Online since: August 2018
• Authors: Meng Juan Wu, Ying Chun Zhang*, Jun Dan Chen, Yun Zhang
• Keywords: Microwave Dielectric Ceramic, NiZrNb₂O₈, Solid Reaction Process

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