Title :
Magnetism and structure of YBaCuO superconducting films deposited in unusual geometries using Nd:YAG laser
Author :
Koga, Takaaki ; Moon, Byung-Moo ; Zakharchenko, Igor ; Rao, K.V. ; Medelius, Hannes
Author_Institution :
R. Inst. of Technol., Stockholm, Sweden
fDate :
11/1/1993 12:00:00 AM
Abstract :
High quality YBa2Cu3O7-δ thin films have been fabricated by pulsed Nd:YAG laser deposition using an unusual off-axis target-substrate geometry. In this geometry, one can eliminate the deposition of laser droplets. The films are free of particles and have smooth surfaces. The critical temperature (T c) of these films is in the range of 87-90 K, which is as high as that of on-axis deposited films. From the X-ray rocking curve measurement and the magnetization measurement, no significant differences were found between the on-axis and off-axis laser deposited films
Keywords :
X-ray diffraction examination of materials; barium compounds; high-temperature superconductors; magnetisation; superconducting thin films; superconducting transition temperature; surface topography; yttrium compounds; 87 to 90 K; X-ray rocking curve; YBaCuO; critical temperature; high quality thin films; laser droplets; magnetism; magnetization; off-axis target-substrate geometry; on-axis deposited films; pulsed Nd:YAG laser deposition; smooth surfaces; structure; superconducting films; Geometrical optics; Optical pulses; Pulsed laser deposition; Sputtering; Superconducting films; Superconducting magnets; Superconducting thin films; Temperature distribution; X-ray lasers; Yttrium barium copper oxide;
Journal_Title :
Magnetics, IEEE Transactions on
