Superconducting transitions of YBa2Cu3Ox superconductors in high fields

T. Matano; M. R. Koblischka; B. W. Veal; M. Murakami; T. Takizawa

doi:10.1088/0953-2048/13/6/336

Superconducting transitions of YBa₂Cu₃O_x superconductors in high fields

T. Matano, M. R. Koblischka, B. W. Veal, M. Murakami, T. Takizawa

Research output: Contribution to journal › Conference article

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 YBa₂Cu₃O_x (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 language	English
Pages (from-to)	805-806
Number of pages	2
Journal	Superconductor Science and Technology
Volume	13
Issue number	6
DOIs	https://doi.org/10.1088/0953-2048/13/6/336
Publication status	Published - 2000 Jun 1
Event	The 2nd International Workshop on the Processing and Applications of Superconducting (RE)CBO Large Grain Materials - Morioka, Jpn Duration: 1999 Oct 19 → 1999 Oct 22

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ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

Cite this

Matano, T., Koblischka, M. R., Veal, B. W., Murakami, M., & Takizawa, T. (2000). Superconducting transitions of YBa₂Cu₃O_x superconductors in high fields. Superconductor Science and Technology, 13(6), 805-806. https://doi.org/10.1088/0953-2048/13/6/336

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AU - Koblischka, M. R.

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AU - Takizawa, T.

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AB - 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.

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10.1088/0953-2048/13/6/336