MgB2 Superconducting Films Fabricated on Copper Substrate by Hybrid Physical-chemical Vapor Deposition

作     者：Fen Li, Tao Guo,Kaicheng Zhang,Chinping Chen and Qingrong Feng School of Physics and State Key Laboratory for Artificial Structure and Mesoscopic Physics Peking University, Beijing 100871, P.R. China 

会议名称：《International Conference on Superconducting Materials(ICSM 2006)》

会议日期：2006年

学科分类：080705[工学-制冷及低温工程] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0807[工学-动力工程及工程热物理] 0702[理学-物理学] 

关 键 词：MgB2 thick films, Cu substrate, HPCVD 

摘      要：The thick MgB2 films have been successfully grown on the Cu substrate by the technique of hybrid physical-chemical vapor deposition (HPCVD). The films are about 2～3 μm and quite dense. They possess the Tc (onset), as high as 37-38 K, and sharp transition ～0.8 K. X-ray diffraction (XRD) indicates their polycrystalline character. The upper critical field at T=0K,HC2(0), is extrapolated as 15.3T. The controlled growth of MgB2 film on Cu substrate opens a new route in the preparation of MgB2 tape materials.