Title :
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
fDate :
6/1/2005 12:00:00 AM
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;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2005.848252
