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

Lennikov V., Ozkurt B., Angurel L. A., Sotelo A., ÖZÇELİK B., de la Fuente G. F.

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, vol.26, no.4, pp.947-952, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 26 Issue: 4
  • Publication Date: 2013
  • Doi Number: 10.1007/s10948-012-1934-1
  • Journal Name: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.947-952
  • Keywords: Bi-2212, Superconductor, Laser, Texture, Critical Current, CU-O FIBERS, LASER TEXTURED BI-2212, SUPERCONDUCTING PROPERTIES, EPITAXIAL-GROWTH, COATINGS
  • Çukurova University Affiliated: Yes

Abstract

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 (a parts per thousand 0.8-1.1 mu m) for melt-processing metal oxide superconductors, the results obtained here demonstrate that mid-IR radiation from a CO2 laser (10.6 mu m) 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.

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 (a parts per thousand 0.8-1.1 mu m) for melt-processing metal oxide superconductors, the results obtained here demonstrate that mid-IR radiation from a CO2 laser (10.6 mu m) 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.