低损耗铌酸盐微波介质陶瓷的制备与性能

doi:10.19976/j.cnki.43-1448/TF.2024011

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Abstract In order to obtain niobate-based microwave dielectric ceramics with lower loss, Zn[(Ge_0.5Mo_0.5)_xNb_1-_x]₂O₆ (x=0.05, 0.10, 0.15, 0.20) niobate microwave dielectric ceramics were prepared by solid-state reaction method with ZnO, GeO₂, MoO₃, and Nb₂O₅ as main raw materials. XRD, SEM, and vector network analyzer were used to characterize the phase composition, microscopic morphologies, and dielectric properties of materials, respectively. The results show that when the sintering temperature is 1 180 ℃, the surface morphology of microwave dielectric ceramics with x=0.05 is the most compact, with the maximum relative density of 94.58%, and has good microwave dielectric properties, dielectric constant ε_ris 21.7, quality factor Q_f is 64 610 GHz, and temperature coefficient of resonant frequency τ_f is -81.2×10^-6/℃.

Key words： microwave dielectric ceramic niobate microwave dielectric property phase composition microstructure

Received: 02 February 2024 Published: 31 May 2024

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	ZHENG Haoran
	QIU Rong
	YANG Pan
	ZHAO Xiaofang
	YU Shihui

Cite this article:

ZHENG Haoran,QIU Rong,YANG Pan, et al. Preparation and property of low loss niobate microwave dielectric ceramics[J]. Materials Science and Engineering of Powder Metallurgy, 2024, 29(2): 133-138.

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http://pmbjb.csu.edu.cn/EN/10.19976/j.cnki.43-1448/TF.2024011 OR http://pmbjb.csu.edu.cn/EN/Y2024/V29/I2/133

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