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AC Current Driven Flux Dynamics in YBCO Coated Conductors

Published online by Cambridge University Press:  17 March 2011

Andrea Lucarelli ,
Ran Yang ,
Gunter Luepke ,
George Levin ,
Timothy Haugan  and
Paul Barnes
Andrea Lucarelli
Affiliation:
Department of Applied Science, College of William and Mary, McGlothlin Street Hall, Williamsburg, VA, 23187
Ran Yang
Affiliation:
Department of Applied Science, College of William and Mary, McGlothlin Street Hall, Williamsburg, VA, 23187
Gunter Luepke
Affiliation:
Department of Applied Science, College of William and Mary, McGlothlin Street Hall, Williamsburg, VA, 23187
George Levin
Affiliation:
Power Generation Branch, Air Force Research Laboratory, 1950 Fifth Street, Bldg 18, WPAFB, OH, 45433
Timothy Haugan
Affiliation:
Power Generation Branch, Air Force Research Laboratory, 1950 Fifth Street, Bldg 18, WPAFB, OH, 45433
Paul Barnes
Affiliation:
Power Generation Branch, Air Force Research Laboratory, 1950 Fifth Street, Bldg 18, WPAFB, OH, 45433
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Abstract

We present a time-resolved magneto-optical imaging study of YBa2Cu3O7-δ coated conductors in alternating current regime. The evolution of the magnetic flux density distribution in the superconducting samples is imaged at small steps of the phase of the applied AC current. The flux penetration during the phase evolution is inhomogeneous due to the grain structure of the coated conductor. A quantitative analysis of the images show how grain boundary network affects the overall behavior of the flux and current density evolution.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1001: Symposium M – Progress in High-Temperature Superconductors , 2007 , 1001-M11-02
Copyright
Copyright © Materials Research Society 2007

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References

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