Monotonic decrease of Tcs with thinning of the superconducting MgB2 layer in MgB2/Ni and MgB2/B alternately-layered thin films

T. Doi, H. Kitaguchi, S. Hata, K. Fukuyama, K. Masuda, K. Takahashi, T. Yoshidome, Y. Hakuraku, N. Kuwano

研究成果: Contribution to journalArticle査読

6 被引用数 (Scopus)


We prepared MgB2/Ni and MgB2/B alternately-layered films using electron beam evaporation and coaxial vacuum arc evaporation techniques without any post-annealing. The thickness of each MgB2 layer was designed to be 42, 24 or 15nm for both MgB2/Ni and MgB 2/B alternately-layered films. We confirmed that the layered structure was successfully obtained from the scanning transmission electron microscopic cross-sectional image of the MgB2/Ni alternately-layered film. The critical temperature, Tc, of the alternately-layered film decreased as the MgB2 layer became thinner, for both MgB 2/Ni and MgB2/B films. Moreover, the Tc was affected by only the MgB2 layer thickness, and was independent of the inserted layer materials.

ジャーナルSuperconductor Science and Technology
出版ステータス出版済み - 12 1 2007

All Science Journal Classification (ASJC) codes

  • セラミックおよび複合材料
  • 凝縮系物理学
  • 金属および合金
  • 電子工学および電気工学
  • 材料化学


「Monotonic decrease of T<sub>c</sub>s with thinning of the superconducting MgB<sub>2</sub> layer in MgB<sub>2</sub>/Ni and MgB<sub>2</sub>/B alternately-layered thin films」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。