Vortex pinning/dynamics in YBCO films with J sub(c)(77 K)>3 times 10 super(6) A/cm super(2) studied by direct transport measurements

Critical current density, J sub(c), is studied for highly biaxially-oriented YBCO thin films with J sub(c)(77 K)>3 MA/cm super(2) in a range of magnetic fields, temperatures, angles between magnetic field vector and film c-axis. J sub(c)(H, theta ) is shown to be dominated by vortex interaction w...

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Bibliographic Details
Published in:	Journal of low temperature physics Vol. 117; no. 5; pp. 1537 - 1541
Main Authors:	Pan, V M, Kasatkin, AL, Flis, V S, Komashko, V A, Svetchnikov, V L, Pronin, A V, Snead, CL, Suenaga, M, Zandbergen, H W
Format:	Journal Article
Language:	English
Published:	01-01-1999
Subjects:	Critical current density (superconductivity) Dislocations (crystals) High temperature superconductors Magnetic field effects Oxide superconductors Thermal effects Vortex flow Yttrium barium copper oxides
Online Access:	Get full text
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Summary:	Critical current density, J sub(c), is studied for highly biaxially-oriented YBCO thin films with J sub(c)(77 K)>3 MA/cm super(2) in a range of magnetic fields, temperatures, angles between magnetic field vector and film c-axis. J sub(c)(H, theta ) is shown to be dominated by vortex interaction with high density (>l0 super(11) lines/cm super(2)) of linear pins - edge dislocations. A model is developed to describe different vortex arrays behavior in the presence of two-dimensional square network of linear pins.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-2 content type line 23 SourceType-Conference Papers & Proceedings-1 ObjectType-Conference-3 ObjectType-Feature-1
ISSN:	0022-2291