Effect of CdO Addition on the Properties of Bi-Contained Superconducting Thick Films Prepared from Rapidly Quenched Amorphous Materials

Masahiro Yoshimura, Tae Hyun Sung, Shigeru Arima, Yutaka Ohya, Sakae Tsutai, Nobuo Ishizawa, Hideomi Koinuma, Zenbe e. Nakagawa

Research output: Contribution to journalArticlepeer-review

Abstract

Substitution of Cd for Ca in Bi2Sr2Ca2Cu3Oy has been studied by using rapid quenching after rapid melting technique. Amorphous materials containing a small amount of CaO phase were obtained as films with about 20 μm thickness. Annealing of the films for Bi2Sr2Ca2-xCdxOy at 870°C for 5 hr in air yielded a superconducting phase with co= 3.0 nm in the composition of x≦0.5. Tc(endpoint) increased and tailing of transition disappeared with increasing Cd contents. A maximum Tc(endpoint) value of 87 K was obtained at the composition of x=0.4. Further substitution of Cd for Ca brought about lowering in Tc, because a semiconducting phase with co = 2.5 nm was formed instead of co = 3.0 nm phase.

Original languageEnglish
Pages (from-to)974-978
Number of pages5
Journaljournal of the japan society of powder and powder metallurgy
Volume35
Issue number9
DOIs
Publication statusPublished - 1988 Jan 1

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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