Crystal chemical simulation of superconductors on the basis of oxide and intermetallic layers

Simulation of 'hybrid' superconductors of 3d, 4d and 5d transition elements consisting of two different superconducting fragments located between positively charged ions planes -B'O-2 oxide planes and B2C2 intermetallic layers -has been performed on the basis of the structure of Sr2Mn3As2O2 (A(2)(B2C2)(B'O-2)). The oxide planes are similar to those of CuO2 in high-temperature superconducting cuprates while the intermetallic layers are similar to those of Ni2B2 in low-temperature superconducting borocarbides RNi2B2C and Fe2As2 layers in high-temperature superconducting oxypnictides RFeAsO1-xFx.