Strong pinning in very fast grown reactive co-evaporated GdBa 2Cu3O7 coated conductors

J. L. MacManus-Driscoll; M. Bianchetti; A. Kursumovic; G. Kim; W. Jo; H. Wang; J. H. Lee; G. W. Hong; S. H. Moon

doi:10.1063/1.4893339

Strong pinning in very fast grown reactive co-evaporated GdBa ₂Cu₃O₇ coated conductors

J. L. MacManus-Driscoll, M. Bianchetti, A. Kursumovic, G. Kim, W. Jo, H. Wang, J. H. Lee, G. W. Hong, S. H. Moon

Department of Physics

Research output: Contribution to journal › Article › peer-review

41 Scopus citations

Abstract

We report on compositional tuning to create excellent field-performance of J_c in "self-doped," GdBa₂Cu₃O _7-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 MAcm^-2. A more Gd-rich composition had the best in-field performance because of the formation of low coherence, splayed Gd ₂O₃ nanoparticles, giving J_c (77 K, 1 T) of over 1 MAcm^-2 and J_c (77 K, 5 T) of over 0.1MAcm ^-2.

Original language	English
Article number	086103
Journal	APL Materials
Volume	2
Issue number	8
DOIs	https://doi.org/10.1063/1.4893339
State	Published - Aug 2014

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title = "Strong pinning in very fast grown reactive co-evaporated GdBa 2Cu3O7 coated conductors",

abstract = "We report on compositional tuning to create excellent field-performance of Jc in {"}self-doped,{"} GdBa2Cu3O 7-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 MAcm-2. A more Gd-rich composition had the best in-field performance because of the formation of low coherence, splayed Gd 2O3 nanoparticles, giving Jc (77 K, 1 T) of over 1 MAcm-2 and Jc (77 K, 5 T) of over 0.1MAcm -2.",

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AU - MacManus-Driscoll, J. L.

AU - Bianchetti, M.

AU - Kursumovic, A.

AU - Kim, G.

AU - Jo, W.

AU - Wang, H.

AU - Lee, J. H.

AU - Hong, G. W.

AU - Moon, S. H.

PY - 2014/8

Y1 - 2014/8

N2 - We report on compositional tuning to create excellent field-performance of Jc in "self-doped," GdBa2Cu3O 7-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 MAcm-2. A more Gd-rich composition had the best in-field performance because of the formation of low coherence, splayed Gd 2O3 nanoparticles, giving Jc (77 K, 1 T) of over 1 MAcm-2 and Jc (77 K, 5 T) of over 0.1MAcm -2.

AB - We report on compositional tuning to create excellent field-performance of Jc in "self-doped," GdBa2Cu3O 7-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 MAcm-2. A more Gd-rich composition had the best in-field performance because of the formation of low coherence, splayed Gd 2O3 nanoparticles, giving Jc (77 K, 1 T) of over 1 MAcm-2 and Jc (77 K, 5 T) of over 0.1MAcm -2.

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Strong pinning in very fast grown reactive co-evaporated GdBa 2Cu3O7 coated conductors

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Strong pinning in very fast grown reactive co-evaporated GdBa ₂Cu₃O₇ coated conductors