| http://www.w3.org/ns/prov#value | - (IV) Oxides of the general formula MezMe???1???zOx, wherein at least one Me element is different than at least one Me??? element, wherein Me is selected from Group 2a and 3a (IUPAC) metals, lanthanides, Cr, Fe, In, Nb, Pb, Si, Sn Ta, Ti, and mixtures thereof, Me??? is selected from Al, Bi, Ce, In, Th, U, Zr and mixtures thereof, and wherein 0???z???1 and x is a number sufficient to satisfy the val
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