Rock salt intergrowth defects

The comparison of the different [m, n] superconducting cuprates suggests that the formation of rock salt or perovskite type defects will not affect dramatically the superconducting properties of these materials. On the opposite, one can expect a dramatic decrease of the superconductivity due to the appearence of double or triple fluorite type defects, since the corresponding regular intergrowths do not superconduct. 

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