Abstract

We have studied the subsolidus phase relation in the BiO1.5-SrO-CaO-CuO system in air. The compounds were identified by X-ray and electron diffractions. New compounds, Bi7Sr7Cu6Ox, Bi7Sr8Cu5Oy, Bi4Sr8Cu5Oz, Bi0.46CaO0.54-xSrxOy (0.1<x<0.2), Bi3Sr4Ca3Oσ and Bi0.25Sr0.75-xCax, Oy (0≤x<0.2) were found in the system.

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