| abstract |
[Problem] To provide, using a material which does not contain any rare earth element, a dielectric ceramic which exhibits a relative permittivity ([epsilon]r) of 40 to 46 and an enhanced Qf value; and to provide a dielectric filter provided with the same. A dielectric ceramic comprising a sintered body such that when the composition is represented by the compositional formula [alpha]ZrO2*[beta]TiO2*[gamma]ZnO*[delta]Nb2O5, the molar ratios alpha, beta, gamma and delta satisfy 0.3000<=alpha<=0.5500, 0.3300<=beta<=0.6000, 0.0108<=gamma<=0.0717, 0.0193<=delta<=0.1283, alpha+beta+gamma+delta=1, and 0.5<gamma/delta<=1, wherein areas having Zn concentrations of 5% or more occupy at least some of the surface of the sintered body. |