Crystallinity and surface morphology of YBCO thin films using an amorphous buffer layer deposited at a low temperature

Yoshitaka Nakamura, Tomitsugu Tsuchihata, Shin Kudo, Tsutomu Kawamata, Masashi Mukaida, Shigetoshi Ohshima

研究成果: ジャーナルへの寄稿Conference article


We have investigated the crystallinity and surface morphology of main YBCO films and buffer layers deposited on an MgO substrate by a low temperature buffer layer deposition technique. A significant improvement in the crystalline quality of the YBCO film is achieved when an amorphous buffer layer of 100 [nm] in thickness on bare MgO substrate annealed at 930 [°C] is crystallized by annealing temperature 950[°C] for 1 hour in an air atmosphere. The surface of main YBCO films has pyramid like large grains when YBCO films have good crystallinity. We confirmed that YBCO films grown on a well-crystallized buffer layer had better crystallinity than ones grown on bare MgO substrate.

ジャーナルIEEE Transactions on Applied Superconductivity
発行部数2 III
出版物ステータス出版済み - 6 1 2003
イベント2002 Applied Superconductivity Conference - Houston, TX, 米国
継続期間: 8 4 20028 9 2002


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering