Strong pinning in very fast grown reactive co-evaporated GdBa2Cu3O7 coated conductors
Strong pinning in very fast grown reactive co-evaporated GdBa2Cu3O7 coated conductors
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DOI：
10.1063/1.4893339
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发表时间：
2014-08-01
期刊：
影响因子：
6.1
通讯作者：
Moon, S. H.
中科院分区：
文献类型：
--
作者：
MacManus-Driscoll, J. L.;Bianchetti, M.;Moon, S. H.
我们报道了在超快反应共蒸发生长的“自掺杂”GdBa2Cu3O7-y(GdBCO)涂层导体中实现J(C)优良场性能的成分调整。为了得到过量的液体和Gd2O3，与GdBCO相比，总体成分都是贫钡和富铜的。研究发现，精确的成分对电流载流性能至关重要。最富铜组分的最佳自场J(C)为3.2 MA cm(-2)。更富Gd的组份由于形成了低相干、分散的Gd2O3纳米颗粒而具有最好的场性能，使得J(C)(77K，1T)超过1 mA cm(-2)，J(C)(77K，5T)超过0.1 mA cm(-2)。(C)2014年作者(S)。除另有说明外，所有文章内容均按照知识共享署名3.0未移植许可进行许可。
We report on compositional tuning to create excellent field-performance of J(c) in "self-doped," GdBa2Cu3O7-y (GdBCO) coated conductors grown by ultrafast reactive co-evaporation. In order to give excess liquid and Gd2O3, the overall compositions were all Ba-poor and Cu-rich compared to GdBCO. The precise composition was found to be critical to the current carrying performance. The most copper-rich composition had an optimum self-field J(c) of 3.2 MA cm(-2). A more Gd-rich composition had the best in-field performance because of the formation of low coherence, splayed Gd2O3 nanoparticles, giving J(c) (77 K, 1 T) of over 1 MA cm(-2) and J(c) (77 K, 5 T) of over 0.1 MA cm(-2). (C) 2014 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.