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Equilibrium Oxygen Pressure of Ba sub 2 YCu sub 3 O sub x , Ba sub 2 EuCu sub 3 O sub x , and Ba sub 2 GdCu sub 3 O sub x as a Function of Temperature

29 April 1987

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The equilibrium oxygen stoichiometry of the superconductors Ba sub 2 YCu sub 3 O sub x , Ba sub 2 EuCu sub 3 O sub x was determined by measuring the oxygen pressure of these materials as a function of temperature in a closed system. The experimental set-up and results are presented.