| http://www.w3.org/ns/prov#value | - (V) A perovskite of the general formula (D1???dD???d)(EeE???1???e)O3???f, wherein D is selected from lanthanides, La, Y, and mixtures thereof, D??? is selected from alkaline earth metals such as Ba, Ca, Sr and mixtures thereof, E is selected from Al, Ce, Co, Mg and mixtures thereof, and E??? is selected from transition elements such as Co, Cr, Cu, Fe, Ni, Zr and mixtures thereof, wherein 0.9???(D+
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