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Magnetic Field Dependence of Critical Current and Microstructure in TFA-MOD {\rm Y}_{1-x}{\rm Sm}_{x}{\rm Ba}_{2}{\rm Cu}_{3}{\rm O}_{y} With Nanoparticles for Coated Conductors

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7 Author(s)

Artificial pinning centers (APC) for TFA-MOD Y1-xSmxBa2Cu3Oy (YSmBCO) coated conductors were introduced to enhance Jc under the magnetic fields and to improve the magnetic field angular dependence of Jc. The coated conductors showed high Jc and isotropic Jc-B-thetas properties with the ratio (Jc,min/Jc,max) of 0.91 (77 K, B = 1 T ). From the results of microstructural observation, BaZrO3 (BZO) nanoparticles were uniformly dispersed in the films by introduction of Zr-salt into YSmBCO solution. The nanoparticles were maintained uniformly not only along the lateral direction but also along the thickness one. It could be considered that the uniform dispersion of BZO nanoparticles in TFA-MOD REBCO coated conductors may act as flux pinning centers to enhance the Jc independent from the angle of the applied magnetic fields.

Published in:

Applied Superconductivity, IEEE Transactions on  (Volume:19 ,  Issue: 3 )

Date of Publication:

June 2009

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