Enhanced Tc and strong flux pinning in melt-processed NdBa2Cu3Oy superconductors

Sang Im Yoo, Masato Murakami, Naomichi Sakai, Takamitsu Higuchi, Shoji Tanaka

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Abstract

The effects of various oxygen partial pressures (PO(2)) during melt processing on the superconducting properties of fabricated NdBa2Cu3Oy (Nd123) superconductors have been systematically investigated. Unlike in air or O2, samples melt-processed in reduced oxygen atmospheres exhibited unprecedentedly high Tc's of 95-96 K with a sharp superconducting transition. Especially, for a sample melt-processed in 0.1% O2 in Ar, the magnetization hysteresis (M-H) loop was kept open up to 7 T at 77 K and for the field parallel to the c-axis of the sample (H//c), implying that very effective flux pinning can be achieved in high magnetic fields.

Original languageEnglish
Pages (from-to)1000-1003
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume33
Issue number7 B
Publication statusPublished - 1994
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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