Development of a superconducting joint between a GdBa2Cu3O7-δ-coated conductor and YBa2Cu3O7−δ bulk: towards a superconducting joint between RE (Rare Earth) Ba2Cu3O7−δ-coated conductors. (3rd June 2015)

• Record Type: Journal Article
• Authors: Jin, Xinzhe; Yanagisawa, Yoshinori; Maeda, Hideaki; Takano, Yoshiki
• Is Part Of: Superconductor science & technology. Volume 28:Number 7(2015:Jul.)
• Publication Date: 2015-06-03
• Subjects: superconducting joint -- Gd123 coated conductor -- crystal growth -- bulk -- persistent current mode; Superconductivity -- Periodicals; Superconductors -- Periodicals; 537.623
• DOI: 10.1088/0953-2048/28/7/075010
• Languages: English
• ISSNs: 0953-2048

Abstract

Abstract: We have started to develop a superconducting bridge joint between two GdBa2 Cu3 O7− δ (Gd123)-coated conductors, where both conductors are placed in an end-to-end arrangement on the surface of a melt-textured YBCO (including Y2 BaCuO5 and YBa2 Cu3 O7− δ ) 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 YBa2 Cu3 O7− δ (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.