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Acta scientiarum naturalium Universitatis Pekinensis

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Growth of MgB2 Thin Film Fabricated on Mg Substrate by Hybrid Physical-Chemical Vapor Deposition

YAO Dan, ZHUANG Chenggang, ZHANG Kaicheng, YU Zengqiang, FENG Qingrong, WANG Furen   

  1. School of physics and State Key Laboratory of Artifical Microstructure and Mesoscopic Physics, Peking University, Beijing, 100871
  • Received:2005-08-10 Online:2006-05-20 Published:2006-05-20

Abstract: Superconducting MgB2 thin films were fabricated on Mg substrate by using the hybrid physical-chemical vapor deposition (HPCVD) technique. The film has a Tc(onset)=39.5K. The SEM images demonstrate that crystallite is compact. X-ray diffraction pattern indicates the film is polycrystalline with no preferring growing direction. The grain size is about 400nm-1.0μm. These results show that it is feasible to deposit MgB2 thin films directly on Mg by HPCVD technique. It is advantaged to fabricate MgB2 fibers directly on SiC carrier and MgB2 superconductive wires.