Journal
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
Volume 28, Issue 7, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-2048/28/7/075010
Keywords
superconducting joint; Gd123 coated conductor; crystal growth; bulk; persistent current mode
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We have started to develop a superconducting bridge joint between two GdBa2Cu3O7-delta (Gd123)-coated conductors, where both conductors are placed in an end-to-end arrangement on the surface of a melt-textured YBCO (including Y2BaCuO5 and YBa2Cu3O7-delta) bulk, which acts as a superconducting medium between the coated conductors. As a first step in the development, one half of the bridge joint assembly was modeled and investigated. Experimental results achieved are as follows: (a) the higher-melting-temperature textured Gd123-coated conductor acts as a seed for the melt texture of the YBa2Cu3O7-delta (Y123) bulk, and (b) the superconducting phase continues across the Y123/Gd123 boundary. The critical current of the joint model is 10 A, which is about 10% of the original Gd123-coated conductor, at 77 K in a self-magnetic field. These results are considered to be extensible to the superconducting bridge joint between the Gd123-coated conductors.
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