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    Ba2Cu3O5+δ as an intermediate phase during the synthesis of YBa2Cu4O8

    We propose a reaction model for the synthesis of YBa2Cu4O8 under normal pressure conditions, which contains 4 partial reaction steps. In a first step bariumnitrate and copperoxide react to Ba2Cu3O5+δ. This substa...

    J. Horn, H. -Ch. Semmelhack, H. Börner, F. Schlenkrich in Journal of thermal analysis (1994)