Formation of superconductors by YAG laser irradiation of laminated thin layers

H. Wada, T. Kuroda, K. Itoh, M. Yuyama, M. Morita, Masato Murakami, S. Matsuda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

An Nb tape was coated with a C layer of controlled thickness (5-10 μm) by magnetron sputtering. A YAG laser irradiated the tape in argon atmosphere. The beam power was 10-100 W, depending on the velocity of the tape, and the diameter of the beam was a few hundred microns. The resultant NbC tape showed superconductivity around 10 K. The same reaction conditions were used in a nitrogen atmosphere. Superconductivity in these tapes was found to start above 15 K. In the process for Nb3Al tapes an Nb tape was first coated with Al and then with C. The irradiation was performed under nearly the same reaction conditions as those for NbC. Superconductivity was found around 14 K, which is somewhat lower than values reported previously. This was attributed to an excess of C in the surface interstitially dissolved in the Nb3Al structure. In all cases phase identification and microstructure observation were carried out by X-ray diffractometry, optical microscopy, and scanning electron microscopy.

Original languageEnglish
Title of host publicationCONFERENCE ON LASERS AND ELECTRO-0PTICS
Editors Anon
Place of PublicationPiscataway, NJ, United States
PublisherPubl by IEEE
Pages354-356
Number of pages3
ISBN (Print)1557520860
Publication statusPublished - 1989
Externally publishedYes
EventSummaries of Papers Presented at the Conference on Lasers and Electro-Optics - Baltimore, MD, USA
Duration: 1989 Apr 241989 Apr 28

Other

OtherSummaries of Papers Presented at the Conference on Lasers and Electro-Optics
CityBaltimore, MD, USA
Period89/4/2489/4/28

Fingerprint

Laser beam effects
Tapes
Superconducting materials
Superconductivity
Magnetron sputtering
X ray diffraction analysis
Optical microscopy
Argon
Irradiation
Nitrogen
Scanning
Microstructure
Scanning electron microscopy
Lasers

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Wada, H., Kuroda, T., Itoh, K., Yuyama, M., Morita, M., Murakami, M., & Matsuda, S. (1989). Formation of superconductors by YAG laser irradiation of laminated thin layers. In Anon (Ed.), CONFERENCE ON LASERS AND ELECTRO-0PTICS (pp. 354-356). Piscataway, NJ, United States: Publ by IEEE.

Formation of superconductors by YAG laser irradiation of laminated thin layers. / Wada, H.; Kuroda, T.; Itoh, K.; Yuyama, M.; Morita, M.; Murakami, Masato; Matsuda, S.

CONFERENCE ON LASERS AND ELECTRO-0PTICS. ed. / Anon. Piscataway, NJ, United States : Publ by IEEE, 1989. p. 354-356.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Wada, H, Kuroda, T, Itoh, K, Yuyama, M, Morita, M, Murakami, M & Matsuda, S 1989, Formation of superconductors by YAG laser irradiation of laminated thin layers. in Anon (ed.), CONFERENCE ON LASERS AND ELECTRO-0PTICS. Publ by IEEE, Piscataway, NJ, United States, pp. 354-356, Summaries of Papers Presented at the Conference on Lasers and Electro-Optics, Baltimore, MD, USA, 89/4/24.
Wada H, Kuroda T, Itoh K, Yuyama M, Morita M, Murakami M et al. Formation of superconductors by YAG laser irradiation of laminated thin layers. In Anon, editor, CONFERENCE ON LASERS AND ELECTRO-0PTICS. Piscataway, NJ, United States: Publ by IEEE. 1989. p. 354-356
Wada, H. ; Kuroda, T. ; Itoh, K. ; Yuyama, M. ; Morita, M. ; Murakami, Masato ; Matsuda, S. / Formation of superconductors by YAG laser irradiation of laminated thin layers. CONFERENCE ON LASERS AND ELECTRO-0PTICS. editor / Anon. Piscataway, NJ, United States : Publ by IEEE, 1989. pp. 354-356
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