|
|||||
|
|
Enhanced diamagnetism in YBa2Cu3O7−δ by hydorgen-plasma treatment |
|
| Authors: | M W Lee M F Tai H J Lee H L Hwang and H -C I Kao |
| Institution: | a Physics Department, National Chung Hsing University, Taichung, Taiwan, ROC b Physics Department, National Chung-Cheng University, Chiayi, Taiwan, ROC c Department of Electro-physics, National Chiao Tung University, Hsinchu, Taiwan, ROC d Department of Chemistry, Tamkang University, Tamsui, Taiwan, ROC |
| Abstract: | We report that the diamagnetism of as-grown YBa2Cu3O7−δ powders can be enhanced by treatment with RF-generated hydrogen plasma. The field-cooling susceptibility at 5 K is found to increase by up to 24%. The enhancement is reproducible for all five samples studied. The lattice parameter c decreases after hydrogenation. For a sample treated for the shortest period, its pinning potential,obtained from magnetic relaxation measurements, is reduced following H-treatment. |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ | |