This paper reports that in REBa₂Cu₃O_7−δ (RE123 or REBCO, RE=Y or rare earth)-coated conductors (CCs) prepared by ex situ metal–organic deposition (MOD), it is feasible to obtain YBa₂Cu₄O₈-type stacking faults (Y124-type SFs) by a post-annealing treatment, and hence to improve its microstructures as well as the critical current (I _c) at 77K. Detailed studies show that the formation and evolution of Y124-type SFs plays an important role in I _c improvement for MOD-derived YBCO CCs, with an increase of I _c(77K) as large as 50∼120A for samples 12 mm in width. This cost-effective approach implies great commercial value for scaled processing.

本文报道，在通过非原位金属有机沉积（MOD）制备的REBa ₂ Cu ₃ O _{7− δ} （RE123 或 REBCO，RE=Y 或稀土）涂层导体（CCs）中，获得 YBa ₂是可行的Cu ₄ O ₈型堆垛层错（Y124型SFs）通过后退火处理，从而改善其微观结构以及77K时的临界电流（I _c）。详细的研究表明，Y124型SF的形成和演化过程中扮演重要的角色我 _ç改进MOD衍生YBCO的CC，同比增长我 _Ç(77K) 大至 50∼120A 样品宽度为 12 mm。这种具有成本效益的方法意味着大规模加工的巨大商业价值。