標題: | GROWTH AND PROPERTIES OF SUBMILLIMETER SINGLE GRAIN TL2BA2CA2CU3O10+X SUPERCONDUCTING THIN-FILMS |
作者: | LIN, HC UEN, TM LIU, CK JUANG, JY WU, KH GOU, YS 電子物理學系 光電工程學系 Department of Electrophysics Department of Photonics |
公開日期: | 2-十月-1995 |
摘要: | Distinct crystalline superconducting grains of Tl2Ba2Ca2Cu3O10+x(Tl-2223) with sizes up to 150 mu mx150 mu mX1 mu m were prepared by a single target dc-sputtering process followed by proper postannealing at temperatures around 910 degrees C. A reactive ion etching process was developed to pattern an similar to 10 mu m wide bridge with four contact leads directly on a single grain to study its superconducting transport properties. The etching process was found to have only minimal effect on the superconducting transition temperature T-c, which was typically around 110 K. Grains grown on MgO(100) and LaAlO3(100) substrates, although, displaying somewhat different in-plane orientations, all had critical current densities J(c), well above 10(6) A/cm2 at 77 K. The existence of only one grain boundary, however, can reduce the J(c) by orders of magnitude. (C) 1995 American Institute of Physics. |
URI: | http://dx.doi.org/10.1063/1.115086 http://hdl.handle.net/11536/1702 |
ISSN: | 0003-6951 |
DOI: | 10.1063/1.115086 |
期刊: | APPLIED PHYSICS LETTERS |
Volume: | 67 |
Issue: | 14 |
起始頁: | 2084 |
結束頁: | 2086 |
顯示於類別: | 期刊論文 |