Formation of submicron-thick oxide barrier for reducing AC loss in multifilamentary Bi2223 tapes

Author

Osamura, K. ; Wada, N. ; Ogawa, T. ; Nakao, F.

Author_Institution

Dept. of Mater. Sci. & Eng., Kyoto Univ., Japan

Volume

15

Issue

2

fYear

2005

fDate

6/1/2005 12:00:00 AM

Firstpage

2875

Lastpage

2878

Abstract

Barrier surrounding oxide superconducting core is effective in reducing AC loss of the multifilamentary tape. Metallic magnesium was chosen as its precursor material. Through the ordinary deformation process to fabricate the tape, the magnesium layer was easily thinned up to sub-micron. By the successive oxidation treatment, the barrier became a stable MgO layer. Usefulness of ductile material has been demonstrated to produce ultra-thin barrier.

Keywords

bismuth compounds; calcium compounds; lead compounds; losses; magnesium compounds; multifilamentary superconductors; oxidation; strontium compounds; superconducting tapes; AC loss reduction; Bi₂PbSr₂Ca₂Cu₃O₁₀; MgO; barrier surrounding oxide superconducting core; deformation process; ductile material; magnesium layer; metallic magnesium; multifilamentary Bi2223 tapes; oxidation treatment; submicron-thick oxide barrier formation; tape fabrication; ultra-thin barrier; Inorganic materials; Magnesium; Multifilamentary superconductors; Oxidation; Silver; Superconducting epitaxial layers; Superconducting films; Superconducting materials; Temperature; Wire; AC loss; BSCCO2223; Mg; barrier; oxidation;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2005.848252

Filename

1440268