Current status of pulsed laser deposition YBCO coated conductors in SRL using buffer layers by ion-beam assisted deposition GZO and self-epitaxy pulsed laser deposition CeO_2

摘要

For a Tong coated conductor fabrication, SRL-Nagoya Coated Conductor Center (NCCC) has installed reel-to-reel equipment for IBAD and PLD Systems. A 60 m long IBAD and a 55 m CeO_2 capped substrate have been successfully produced. The PLD-CeO_2, which we call the self-epitaxial method, is found to be effective to increase the in-plane alignment and processing rate of buffer layers. PLD-YBCO layers on the self-epitaxial PLD-CeO_2 cap layer exhibited a high degree of in-plane texturing about 3 deg and thus high J_c up to 4.4 MA cm~(-2) and high I_c of 276 A cm~(-1) width. Long YBCO conductor fabrication using reel-to-reel PLD equipment is now underway.