Effect of Ba substitution for Sr in Bi2Sr2CaCu2O y superconducting films prepared by rf-sputtering method |
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| Authors: | Shigeru Kanematsu Hiroyuki Enomoto Jae Soo Shin Hajime Ozaki |
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| Institution: | 1. Department of Electrical Engineering , Waseda University , Ohkubo 3-4-1, Shinjuku-ku, Tokyo, 169, Japan;2. Sony Corporation;3. Department of Electrical Engineering , Waseda University , Ohkubo 3-4-1, Shinjuku-ku, Tokyo, 169, Japan;4. Taejon University (Korea). |
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| Abstract: | In order to investigate the effect of the distance between the CuO2 layer and the SrO layer, d Cu-Sr, on the superconductivity in the Bi2Sr2CaCu2O y system, we have substituted Ba for Sr. Bi-(Sr, Ba)-Ca-Cu-O superconducting thin films were prepared by the rf-magnetron sputtering method. Rietveld analysis was employed to estimate d Cu-Sr. Samples with various d Cu-Sr were obtained by changing the post-annealing temperature as well as the Ba concentration. Tc was found to increase with increasing d Cu-Sr. |
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| Keywords: | 2212 phase thin film rf-sputtering method Ba substitution for Sr Rietveld analysis |
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