标题 |
Structure and microwave dielectric properties of low-temperature sinterable A2.5VMoO8 (A = Mg, Zn) molybdovanadate ceramics
低温烧结A2.5VMoO 8(A=Mg,Zn)钼钒酸盐陶瓷的结构和微波介电性能
相关领域
温度系数
陶瓷
材料科学
微观结构
电介质
拉曼光谱
分析化学(期刊)
相(物质)
矿物学
复合材料
化学
光学
光电子学
色谱法
物理
有机化学
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Abstract A2.5VMoO8 (A = Mg, Zn) molybdovanadate ceramics have been prepared through conventional solid-state ceramic route. Phase purity of these ceramics was confirmed using powder X-ray diffraction studies. Co-existence of both MoO42− and VO43− tetrahedra in the unit cell of these molybdovanadates has been identified through laser Raman spectroscopy. Sintered A2.5VMoO8 (A = Mg, Zn) ceramics show homogenous and dense microstructure. Mg2.5VMoO8 ceramic has a dielectric constant (εr) of 8.8, unloaded quality factor of 4800 at 10.85 GHz and temperature coefficient of resonant frequency (τf) of -58 ppm/ ℃ whereas Zn2.5VMoO8 ceramic exhibits a dielectric constant of 11.5, unloaded quality factor of 2500 at 9.18 GHz and temperature coefficient of resonant frequency τf of 115 ppm/ ℃. |
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