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Deposition of YBCO Thin Film by Aerosol Assisted Spray Pyrolysis Method using Nitrate Precursors  

Kim, Byeong-Joo (Korea Polytechnic University)
Hong, Seok-Kwan (Korea Polytechnic University)
Kim, Jae-Geun (ISEM, University of Wollongong)
Lee, Jong-Beom (Korea Polytechnic University)
Lee, Hee-Gyoun (Korea Polytechnic University)
Hong, Gye-Won (Korea Polytechnic University)
Publication Information
Progress in Superconductivity / v.12, no.1, 2010 , pp. 68-73 More about this Journal
Abstract
Y123 films have been deposited on $LaAlO_3$ (100) single-crystal and IBAD substrates by spray pyrolysis method using nitrate precursors. Ultrasonic atomization was adopted to decrease the droplet size, spraying angle and its moving velocity toward substrate for introducing the preheating tube furnace in appropriate location. A small preheating tube furnace was installed between spraying nozzle and substrate for fast drying and enhanced decomposition of precursors. C-axis oriented films were obtained on both LAO and IBAD substrates at deposition temperature of around $710{\sim}750^{\circ}C$ and working pressures of 10~15 torr. Thick c-axis epitaxial film with the thickness of $0.3{\sim}0.6\;{\mu}m$ was obtained on LAO single-crystal by 10 min deposition. But the XRD results of the film deposited on IBAD template at same deposition condition showed that the buffer layers of the IBAD metal substrate was affected by long residence of metal substrate at high temperature for YBCO deposition.
Keywords
CVD; nitrate; spray pyrolysis; ultrasonic atomization; YBCO;
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