Preparation of bi2sr2cacu2ox superconductors from amorphous films by rapid quenching after rapid melting

Masahiro Yoshimura, Tea Hyun Sung, Zenbee Nakagawa, Tetsuro Nakamura

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Abstract

Complete amorphous films with the composition of Bi2Sr2CaCu2Ox were successfully prepared by the rapid quenching after rapid melting technique without any containers. The evaporation loss was measured to be 0.237 wt%/sec or less at 1673–1773 K in the initial stage of melting. The amorphous materials were crystallized in the Bi2Sr2CaCu2Ox phase above 1073 K through the Bi2Sr2CuOx phase crystallized above 733 K. The crystallized Bi2Sr2CaCu2Ox film showed a superconducting transition at Tco=86.8 K and Tce=66.7 K.

Original languageEnglish
Pages (from-to)L1877-L1879
JournalJapanese Journal of Applied Physics
Volume27
Issue number10 A
DOIs
Publication statusPublished - 1988 Oct

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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