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 (er) 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/ ℃.

中文翻译：

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低温可烧结A2.5VMoO8 (A = Mg, Zn)钼钒酸盐陶瓷的结构和微波介电性能

A2.5VMoO8 (A = Mg, Zn) 钼钒酸盐陶瓷已通过常规固态陶瓷途径制备。使用粉末 X 射线衍射研究证实了这些陶瓷的相纯度。已经通过激光拉曼光谱确定了这些钼钒酸盐晶胞中 MoO42- 和 VO43- 四面体的共存。烧结的 A2.5VMoO8 (A = Mg, Zn) 陶瓷显示出均匀致密的微观结构。Mg2.5VMoO8 陶瓷的介电常数 (er) 为 8.8，10.85 GHz 下的空载品质因数为 4800，谐振频率温度系数 (τf) 为 -58 ppm/℃，而 Zn2.5VMoO8 陶瓷的介电常数为 11.5，空载9.18 GHz 时的品质因数为 2500，谐振频率温度系数 τf 为 115 ppm/℃。