EuBa2Cu3Ox produced by oxidation of a rapidly solidified precursor alloy: An alternative preparation method for high T c ceramic superconductors

17 August 1987

journal article
research article
Published by AIP Publishing in Applied Physics Letters

Vol. 51 (7) , 538-539
https://doi.org/10.1063/1.98391

Abstract

High‐temperature ceramic superconductors such as RE₁Ba₂Cu₃O_∼7 are usually prepared by reacting the constituent metal oxides (RE=rare‐earth metal). We have prepared RE₁Ba₂Cu₃O_∼7 by an alternate method, first combining three metals into an alloy by rapid solidification processing, followed by oxidation to form the cuprate. Only Eu (or Yb) yields single phase RE‐Ba‐Cu liquids as required for melt processing, because their valency changes from two in the metal (assuring complete miscibility with Ba) to three in the oxide. The superconducting properties of the oxidized alloys are similar to those of EuBa₂Cu₃O_x prepared by the standard ceramic reaction route.

Keywords

This publication has 4 references indexed in Scilit:

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