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- W3026287290 abstract "Mg1-xCoxMoO4 (x = 0.01–0.15) ceramics were prepared by traditional solid-state methods. The phase composition, crystalline structure, micromorphology, and microwave dielectric properties of Mg1-xCoxMoO4 ceramics were comprehensively studied. Mg1-xCoxMoO4 ceramics present monoclinic wolframite structures from x = 0.01 to x = 0.15 with Co occupying the Mg-site. With the addition of Co2+, εr of Mg1-xCoxMoO4 ceramics increase. Q × f is maximal at 5 mol% Co2+ content. The Mg0.95Co0.05MoO4 ceramic exhibits an optimal microwave dielectric property: εr = 7, Q × f = 59247 GHz, τf = −68 ppm/°C. The Q × f values increase by 20% compared with the pure MgMoO4 ceramics (~49149 GHz). Doping Co2+ effectively promotes the densification of ceramics and increases εr and Q × f. However, when the Co content exceeds 5 mol%, the decreased packing fraction and disorder distribution of ions contribute to the increase in dielectric losses. The correlations between Co2+ substitution and wolframite structure have been discussed by Raman spectroscopy, FT-IR spectroscopy and Rietveld refinement." @default.
- W3026287290 created "2020-05-29" @default.
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- W3026287290 date "2020-10-01" @default.
- W3026287290 modified "2023-10-17" @default.
- W3026287290 title "Correlations between structure and microwave dielectric properties of Co doped MgMoO4 ceramics" @default.
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- W3026287290 doi "https://doi.org/10.1016/j.ceramint.2020.05.187" @default.
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