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High Levitation Force and Trapped Field of Large Grain YBCO at 77K by Ga Doping

Published online by Cambridge University Press:  18 March 2011

Yu X. Zhou ,
Wai Lo ,
Tong B. Tang  and
Kamel Salama
Yu X. Zhou
Affiliation:
Texas Center for Superconductivity and Department of Mechanical Engineering, University of Houston, Houston, TX 77204, USA Department of Physics, HongKong Baptist University, Kowloon, HongKong
Wai Lo
Affiliation:
Texas Center for Superconductivity and Department of Mechanical Engineering, University of Houston, Houston, TX 77204, USA
Tong B. Tang
Affiliation:
Department of Physics, HongKong Baptist University, Kowloon, HongKong
Kamel Salama
Affiliation:
Texas Center for Superconductivity and Department of Mechanical Engineering, University of Houston, Houston, TX 77204, USA
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Abstract

Levitation force and magnetic field trapping are the most important properties of YBCO large grain materials. They are dependent on the pinning force exerting on the magnetic flux lines by various crystal defects in YBCO. In this paper, Ga-doped bulk YBCO samples were fabricated by SmBCO seeded melt-growth process. The levitation force and trapped field were enhanced by the introduce of nanometer scale week superconducting regions which are formed by the Ga partially substituting for Cu on the Cu-O chain.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 659: Symposium II – High-Temperature Superconductors-Crystal Chemistry, Processing & Properties , 2000 , II8.2
Copyright
Copyright © Materials Research Society 2001

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References

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