Patent ID: 8906818

Claim:
A dielectric composition comprising a compound of the formula [(M′) 1−x (A′) x ][(M″) 1−y−z (B″) y (C″) z ]O 3−δ (V O ) δ where 0.0≦x≦0.4, 0.00≦y≦0.40, 0.00≦z≦0.40, M′ is selected from the group consisting of, Mg, Ca, Pb and mixtures thereof, A′ is selected from the group consisting of K, Na, Li, Ag and mixtures thereof, M″ is selected from the group consisting of Ti, Zr, Hf, Sn, (Mg 1/3 ,Nb 2/3 ), (Zn 1/3 ,Nb 2/3 ), (Sc 1/2 ,Ta 1/2 ) and mixtures thereof, B″ is selected from the group consisting of, Al, Y, La, Fe, Ho, Tm, Sb, Sm, Gd, Er, Pr, Mo, Dy and mixtures thereof, C″ is selected from the group consisting of V, Mn, Cr, Fe, Ni, Cu, Zn, Ca, Mg and mixtures thereof, (VO) δ represents oxygen vacancies and δ≦0.5x+0.5y+z wherein an accumulation of ions is present at grain boundaries present in the compound.