標題: | SUPERCONDUCTING PROPERTIES OF ORIENTED YBA2CU3O7-X FILMS ON MGO AND SRTIO3 SUBSTRATES |
作者: | HAUNG, CJ TSENG, TY 電子工程學系及電子研究所 Department of Electronics Engineering and Institute of Electronics |
公開日期: | 1-五月-1993 |
摘要: | Using single-target sputter deposition, the c-axis oriented YBa2Cu3O7-x films can be obtained on both MgO and SrTiO3 substrates by appropriately controlling the substrate temperature at 700-degrees-C. However, on examining a.c. susceptibility and electrical dissipation, we find that the films on a SrTiO3 substrate possess better superconducting properties, such as a stronger coupling between the superconducting grains; a higher potential energy for flux pinning; and a larger capacity for current conduction. Also, from the magnetization hysteresis measurement, the critical current density of 2.6 x 10(6) A cm-2 (77 K) and 4.5 x 10(7) A cm-2 (5 K) for the sample on the SrTiO3 substrate can be estimated. |
URI: | http://hdl.handle.net/11536/3026 |
ISSN: | 0254-0584 |
期刊: | MATERIALS CHEMISTRY AND PHYSICS |
Volume: | 34 |
Issue: | 2 |
起始頁: | 110 |
結束頁: | 114 |
顯示於類別: | 期刊論文 |