Preparation of Yb-Ba-Cu-O Superconducting Films Using an Arc Discharge Evaporation Method
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概要
- 論文の詳細を見る
We report a new process for preparing superconducting films of YbBa_2Cu_3O_<7-x> using DC arc discharge evaporation on insulating substrates such as SrTiO_3(100) and MgO(100). The films were deposited without intentional heating and subsequently annealed typically at 950℃ for 2 hours in O_2 atmosphere. Although the as-deposited films were amorphous and insulators, the annealed ones on MgO substrates showed superconductivity with Tcend(zero resistivity) = 78 K. However, the films on other substrates (Y-stabilized ZrO_2, SrTiO_3, and Al_2O_3) did not show superconductivity down to 30 K. It was found from X-ray diffraction analysis that the films on MgO were predominantly oriented with the c-axis perpendicular to the substrate.
- 社団法人応用物理学会の論文
- 1989-05-20
著者
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Nohira Hiroshi
Graduate School Of Science And Engineering Tokyo Institute Of Technology
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ISHIWARA Hiroshi
Graduate School of Science
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Nohira Hiroshi
Graduate School of Engineering, Musashi Institute of Technology, Setagaya, Tokyo 158-8557, Japan
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