Superconducting transitions of YBa2Cu3Ox superconductors in high fields

T. Matano, Michael Rudolf Koblischka, B. W. Veal, Masato Murakami, T. Takizawa

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5 Citations (Scopus)

Abstract

Superconducting transitions were measured in field-cooled cooling and field-cooled warming modes in external magnetic fields ranging between 1 mT and 7 T on YBa2Cu3Ox (Y123) single crystals with and without the fishtail effect. The Y123 crystal with the fishtail effect exhibited a two-step transition when being cooled in high fields, while the Y123 crystal without the fishtail showed a single step transition. Furthermore, an upturn in magnetic moment was observed at lower temperatures for Y123 with the fishtail effect. Such an upturn is ascribed to the local Cu magnetic moment due to oxygen vacancies. The fishtail effect is thus caused by oxygen vacancies.

Original languageEnglish
Pages (from-to)805-806
Number of pages2
JournalSuperconductor Science and Technology
Volume13
Issue number6
DOIs
Publication statusPublished - 2000 Jun
Externally publishedYes

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics

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