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
光電工程研究所
Department of Electrophysics
Institute of EO Enginerring
公開日期: 2-Oct-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/11536/149141
ISSN: 0003-6951
DOI: 10.1063/1.115086
期刊: APPLIED PHYSICS LETTERS
Volume: 67
起始頁: 2084
結束頁: 2086
Appears in Collections:Articles