Abstract
REBCO-coated conductors are used for various power applications. For the practical use of REBCO, it is necessary to enhance the critical current density (Jc) in magnetic fields. In addition, improving the Jc anisotropy is an important issue. In this study, in order to improve Jc anisotropy, we fabricated GdBCO films incorporating a hybrid APC combined with BHO nanorods in BHO layers. From transmission electron microscopic images, we found that BHO formed nanorods along the c-axis and non-superconducting layers parallel to the ab-plane. From the magnetic field angular dependences of Jc, we found that the films exhibited two Jc peaks for B//c and B//ab, and the Jcmin showed 0.8 MA/cm2 in 1 T. This value is higher than that of a film in which only nanorods are introduced. We believe that hybrid APC was effective for improving the Jc anisotropy.
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