Author: Ni, Z.
Paper Title Page
WEPWO028 10×10mm2 MgB2 Film Fabricated by HPCVD as a Candidate Material for SRF Cavit 2375
  • F. He, K.X. Liu, Z. Ni, D. Xie
    PKU, Beijing, People's Republic of China
  • Q. Feng
    Peking University, Beijing, People's Republic of China
  Magnesium diboride (MgB2) is one of candidate material for superconducting radio frequency cavities because of its good features: high transition temperature of ~39K and absence of weak links between grains which prevents other high-Tc superconducting materials, such as YBCO. Previous study of MgB2 are mainly focused on the films’ superconducting properties which are fabricated on Al2O3, SiC or some metal substrates with small scale less than 10×10 mm2. In this work we explore a technique to deposit clean and large-scale MgB2 films on Mo substrate, which is expected to provide a probable way to fabricate MgB2 thin-film cavities.. The measurement results show that its superconducting properties and mechanical behaviors are as good as those fabricated on small-scale metal substrates.