Abstract
Glass ceramic based superconductors in four different compositions in BiPbSrCaCuO system have been synthesised. The amorphous flakes were initially produced by crucibleless melting between twin rollers. The as prepared amorphous flakes were semiconductors. The different heat-treatment schedules were estimated from thermal analysis measurements. Characterisation of differently heated samples show that the growth of superconducting phase in the amorphous matrix is dependent upon the heat-treatment schedule. The results of X-ray diffraction data is consistent with the results of resistivity, AC susceptibility and optical microstructure.
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