Microstructure and Transport Properties of Bi-2212 Prepared by CO2 Laser Line Scanning

• DOI: 10.1007/s10948-012-1934-1
• Publication Date: 2012-12-21T03:30:19Z
• Authors: V. Lennikov; B. Özkurt; L. A. Angurel; A. Sotelo; B. Özçelik; G. F. de la Fuente
• Keywords: Traverse

A novel Laser Line Scanning method has been applied to process rectangular cross-section Bi-2212 monoliths containing 2.9 % Ag using a CO2 Laser. Although previous work has suggested the use of nIR lasers (≈0.8–1.1 μm) for melt-processing metal oxide superconductors, the results obtained here demonstrate that mid-IR radiation from a CO2 laser (10.6 μm) may be just as convenient for such a purpose while it enables processing large surface areas. The samples described here were processed at traverse rates ranging between 15 and 60 mm/h, exhibited a complex textured microstructure and yielded highest I c values of 71 A at 77 K.<br/>Peer Reviewed<br/>The authors acknowledge the European Commission LIFE Program (LIFE11/ENV/ES 560 “CERAMGLASS”), the Spanish MINECO and European Commission FEDER Program (Projects MAT2008-00429 and MAT2011-22719), Universidad de Zaragoza (Project UZ2011-TEC-03 and Servicio General de Apoyo a la Investigación-SAI), as well as DGA for Groups T87 (Laser Applications Lab) and T13 (Applied Superconductivity).<br/>