Abstract
A technology has been developed for synthesizing a superconducting ceramic from glassy-crystalline precursors having the nominal compositions (Bi1.7Pb0.3Sr2Ca(n–1)Cu n O y (n = 3 – 5). The ceramic is synthesized in a melt under the influence of solar radiation. The dependence of the formation of superconducting phases on the temperature-time conditions is studied, and the degree of texturing based on the Lotgering factor is evaluated in relation to the temperature of the ceramic’s heat treatment. The temperature at which the ceramic transitions to the superconducting state is determined (T c = 107 – 138 K) along with its post-transition stability (>7 years).
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