Oxygen concentration of Eu sub 1 Ba sub 2 Cu sub 3 O sub 7 minus x in vacuum: An atom probe study

Atom Probe mass analysis, at 85 K, using a wide-angle instrument was used to measure the oxygen content and metallic stoichiometry of the near-surface region of the superconducting ceramic oxide Eu{sub 1}Ba{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} ({ital x}{approx equal}0.1) after vacuum exposure at r...

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