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Ceramic material of the general formula : [SE1-xMIIx] [Cr1-y-zRyLz] O3, where SE stands for one or more rare earth metals, MII stands for one or more metals of the oxidation state e +II, L stands for Al and/or Ga, R stands for one or more metals selected from Fe, Zn, Ge, and Sn, and wherein the following applies : 0 < x < 1; 0 < y < 1; 0.5 < z < 1; y+z < 1.