Dielectric material and method of producing the same

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A dielectric material comprising : a composition represented by aBaO·bTiO2·cREO3/2·dBiO3/2, wherein a, b, c and d each independently represent a molar ratio satisfying the following requirements : a+b+c+d=1, 0.09≤a≤0.16, 0.54≤b≤0.62, 0.20≤c≤0.34 and 0≤d≤0.10; and RE represents a rare earth metal; and from 5 to 50 parts by mass, per 100 parts by mass of the composition, of a glass containing a component represented by kBaO·lZnO·mB2O3·nSiO2, wherein k, l, m and n each independently represent a composition percentage satisfying the following requirements : k+l+m+n=100, 25≤k≤55, 5≤l≤30, 15≤m≤35 and 5≤n≤30.