Ion Beam Modification of BiSrCaCuO Ultrathin Films of Nearly Three Half-Unit-Cell Thickness
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概要
- 論文の詳細を見る
The effects of ton irradiation on superconductirng BiSrCaCuO ultrathin films were examined. Superconducting ultrathin films with a nearly three half-unit-cell thickness of 〜50 Å were prepared by rf magnetron sputtering and a precisely controlled multistep heat treatment. Tire 100 keV Ar ion irradiation followed by short-time annealing of these ultrathin films was found to improve the zero-resistance critical temperature T_<c,0> in a significant manner. The T_<c,0> improvement was marked in the case of low-T_<c,0> multiphase films. The ion beam modification of ultrathin films was interpreted in terms of Ar-ion-induced atomic mixing and reordering within a specific volume containing superconducting phases and nonsuperconducting impurity phases.
- 社団法人応用物理学会の論文
- 1996-03-15
著者
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SAITO Kazuo
National Research Institute of Brewing
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KAISE Masatsugu
National Research Institute for Metals
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You Joutghun
National Research Institute For Metals
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Saito Kazuo
National Research Institute For Metals
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