Process for preparting a bismuth-type compound oxide superconductor
AssigneeSumitomo Electric Industries, Ltd.
InventorsHideo Itozaki, Keizo Harada, Shuji Yazu
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Abstract
A novel process for preparing superconductor of bismuth-containing compound oxide such as Bi--Sr--Ca--Cu system. In the present invention, firstly an intermediate compound oxide containing metal elements of the superconductor except bismuth is prepared and then the intermediate compound oxide is contacted with bismuth oxide vapour at a temperature between 750.degree. and 950.degree. C. so that bismuth oxide is reacted with said intermediate compound oxide.
Claims20
A process for preparing a superconductor of a bismuth-containing compound oxide, characterized by the steps comprising preparing an intermediate compound oxide composed of metal elements which are constituent elements of said superconductor except bismuth, and subjecting said intermediate compound oxide to heat-treatment at a temperature between 750.degree. and 950.degree. C. in an atmosphere containing bismuth oxide vapour so that bismuth oxide reacts with said intermediate compound oxide to produce the superconductor.
Dependencies are inferred from the claim text.