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Critical current density of polycrystalline YBa2Cu3O7−δ consisting of tin-coated grains |
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| Authors: | XG Zheng N Mizuta H Kuriyaki K Hirakawa |
| Institution: | Department of Electronics, Faculty of Engineering, Kyushu University, Fukuoka, 812, Japan |
| Abstract: | Tin and its oxides have been introduced into the intergrain areas of polycrystalline YBa2Cu3O7−δ by coating the crystalline grains with a thin layer of tin and sintering the ceramics in flowing oxygen and argon. The transport critical current density Jc at 77 K in a magnetic field of 0−1.5 T is enhanced as a result of the coating. A probable improvement of the intergrain weak links is suggested. |
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