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MgB2 thick films deposited on stainless steel substrate with Tc higher than 39 K |
| LI Fen, GUO Tao, ZHANG Kai-cheng, CHEN Chin-ping, FENG Qing-rong |
| Department of Physics and State Key Laboratory for Artificial Structure and Mesoscopic Physics, Peking University, Beijing 100871, China |
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Abstract Thick MgB2 (magnesium diborate) films, ∼ 10 μm, with Tc (onset) = 39.4 K and Tc (zero) = 39.2 K have been successfully grown on a stainless steel substrate using a technique called hybrid physical-chemical deposition (HPCVD). The deposition rate is high, ∼ 6.7 nm /s. The X-ray diffraction (XRD) indicates that it is highly (101) and c-axis oriented. The scanning electron microscope (SEM) images demonstrate that the film grown is in island-mode . The uniform superconducting phase in the film is shown by the M-T measure-ment.
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Issue Date: 05 December 2006
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