Abstract
We have systematically studied the superconducting properties and flux pinning enhancement of [(YSN)-123] composite oxides by melt growth process in air. A sample prepared by this method showed well-textured microstructure, and [(YSN)211] nonsuperconducting particles were uniformly dispersed in large (YSN) 123 superconducting matrix. The sample showed a sharp superconducting transition at 91 K. The magnetization measurements of the (YSN)-123 sample exhibited the enhanced flux pinning, compared with (Y-123) sample without Sm and Nd. Critical current densities of (YSN)-123 sample was at 2 T and 77 K. Ā Ȁ 耀 耀 P က က 䀀 Ā က Ā ࠀ
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