Fabrication of 100 A class, 1 m long coated conductor tapes by metal organic chemical vapor deposition and pulsed laser deposition V. Selvamanickam * , H.G. Lee, Y. Li, X. Xiong, Y. Qiao, J. Reeves, Y. Xie, A. Knoll, K. Lenseth Intermagnetics General Corp., SuperPower Inc., 450 Duane Avenue, Schenectady, NY 12304, USA Received 13 November 2002; accepted 7 February 2003 Abstract SuperPower has been scaling up YBa 2 Cu 3 O x -based second-generation superconducting tapes by techniques such as pulsed laser deposition (PLD) using industrial laser and metal organic chemical vapor deposition (MOCVD). Both techniques offer advantage of high deposition rates, which is important for high throughput. Using highly-polished substrates produced in a reel-to-reel polishing facility and buffer layers deposited in a pilot ion beam assisted deposition facility, meter-long second-generation high temperature superconductor tapes have been produced. 100 A class, meter- long coated conductor tapes have been reproducibly demonstrated in this work by both MOCVD and PLD. The best results to date are 148 A over 1.06 m by MOCVD and 135 A over 1.1 m by PLD using industrial laser. Ó 2003 Elsevier B.V. All rights reserved. PACS: 74.72.Bk; 74.60.Jg; 74.76.Bz Keywords: MOCVD; PLD; IBAD; Coated conductor 1. Introduction SuperPower has been developing second-gen- eration high temperature superconductors (HTS) for electric power applications such as transform- ers, cables, and fault current controllers. Two pathways are being pursued in the fabrica- tion of second-generation superconducting tapes, namely, metal organic chemical vapor deposition (MOCVD) and pulsed laser deposition (PLD). Both these in situ techniques have the advantage of high deposition rates [1,2] which is important to achieve high throughput. High throughput is critical to produce a low cost second-generation conductor. In addition to high deposition rate, MOCVD offers another key advantage in large area deposition. A combination of high deposition rate and large area deposition that is possible with MOCVD is very attractive for high throughput. MOCVD offers other advantages such as separate of precursors from deposition chamber, non-line of sight coating, and ability to individually control precursor composition. Long-length HTS tapes * Corresponding author. Tel.: +1-518-346-1414x3097; fax: +1-518-346-6080. E-mail address: selva@igc.com (V. Selvamanickam). 0921-4534/$ - see front matter Ó 2003 Elsevier B.V. All rights reserved. doi:10.1016/S0921-4534(03)00789-5 Physica C 392–396 (2003) 859–862 www.elsevier.com/locate/physc