Abstract
We report the enhanced pinning properties of Sm-doped GdBa 2 Cu 3 O 7-δ (GdBCO) coated conductors (CCs) compared with those of GdBCO CCs by the reactive co-evaporation deposition and reaction process. For this paper, Sm-doped GdBCO CCs could be fabricated successfully using the same processing parameters with GdBCO CCs. While the GdBCO CCs exhibited higher critical temperature (T c ) and larger self-field critical current (I c ) at 77 K, Sm-doped GdBCO CCs possessed higher infield minimum critical current density (J c ) values in the field region of 1-5 T at 77 K most probably due to a refinement of (Gd,Sm) 2 O 3 nanoparticles trapped in the (Gd,Sm)BCO superconducting matrix.
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