Preferential Formation of High T c Phase in Nd-Ba-Cu-O Superconductors Melt-Processed in Reduced Oxygen Atmospheres
作者： S. I. Yoo , N. Sakai , K. Segawa , M. Watahiki , M. Murakami
DOI: 10.1007/978-4-431-68535-7_158
关键词:
摘要: To identify a preferential formation of high T c phase (x<0.1) during melt processing in reduced oxygen atmosphere among the Nd1+xBa2+xCu3Oy solid solutions, and superconducting transition behavior for samples fabricated using both various cooling rates isothermal growth at temperatures low partial pressure (PO2) were investigated. The relations between conditions properties Nd-Ba-Cu-O supported that was enabled by suppression Nd substitution Ba sites solutions PO2. Details could be qualitatively described considering on stability diagram LOG [PO2(bar)] vs 1/T(K−1) showing different melting lines compositions x.
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