Recent progress of high performance Ag-sheathed Bi2223 wire

Recently, we have updated the highest J(c) and I-c at 77 K, self-field, for our R&D short length tapes and I-c x L at 77 K, self-field, for our kilometer-length manufacturing product. For our short length R&D tapes, we have updated the I-c to 236 A. The highest J(c) has reached 663 A/mm(2). Furthermore, we have broken our own world record performance of I-c x L with the production of a 4.2 mm wide, 2084 m long Bi wire that carries an average current of 176 A. This has resulted in a new record high wire performance of 367 k Am. (c) 2010 Published by Elsevier B.V.