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Publikováno v:
Journal of the European Ceramic Society. 23:2479-2483
Of the niobate ceramics with the formula M 2+ Nb 2 O 6 , several compounds (M 2+ =Zn, Mg, Ca and Co) have Qf values (at f =1–10 GHz) between 40 000 and 90 000 GHz, offering potential in dielectric resonator applications. However, their temperature