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Abstract:
200 nm Ni film is coated on 25 mu m thick Mo foil, and graphene is grown on the Ni-Mo system by CVD method. After the annealing process of CVD, the Ni/Mo bilayer transforms into Ni-Mo alloy, then we have successfully fabricated MgB2 films on graphene/Ni-Mo alloy system via the hybrid physical-chemical vapor deposition (HPCVD) technique. The transition temperature T-c onset is 38.25 K with a corresponding transition width of 0.75 K. The average thickness of MgB2 films is 200 nm (25% concentration B2H6). The critical current density derives from the magnetization measurement at 5 K is, j(c) (5 K, 0 T) = 9.6 +/- 106 A/cm(2). We can easily deposite MgB2 on graphene/Ni-Mo alloy system with a lower B2H6 concentration and less gas flow, which lays a good foundation for depositing MgB2 thick films. The graphene in this system is multilayer and with defects, it may act like an intermediary film for the growth of MgB2, or a carbon-doping source. (C) 2015 Elsevier B.V. All rights reserved.
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PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
ISSN: 0921-4534
Year: 2015
Volume: 516
Page: 27-30
1 . 7 0 0
JCR@2022
ESI Discipline: PHYSICS;
ESI HC Threshold:190
JCR Journal Grade:4
CAS Journal Grade:4
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 7
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