Title :
Analysis of growth conditions of SmBaCuO thin films
Author :
Di Trolio, A. ; Morone, A. ; Orlando, S. ; Gambardella, U. ; Pace, S.
Author_Institution :
Istituto per i Mater. Speciali, CNR, Tito Scalo, Italy
fDate :
6/1/1999 12:00:00 AM
Abstract :
In this paper we analyze the critical temperature of SmBaCuO thin film grown by means of pulsed laser deposition as a function of the relevant deposition parameters, i.e., the pressure of the reactive oxygen atmosphere and the substrate temperature. We used a Nd-YAG radiation at 532 nm. The films have been deposited either on oriented magnesium oxide [100] or on strontium titanate [100] single crystals. The substrate temperature range spans from 650/spl deg/C to 800/spl deg/C, and the oxygen pressure is in the range (10/sup -5/-4/spl times/10/sup -1/) mbar. In these ranges of parameters we get metallic behavior of the resistance vs. temperature, with an onset of the critical temperature up to 91 K. XRD characterizations showed the orientation of c axis normal to the substrate surface.
Keywords :
X-ray diffraction; barium compounds; high-temperature superconductors; pulsed laser deposition; samarium compounds; superconducting thin films; superconducting transition temperature; 650 to 800 degC; HTSC; MgO; SmBaCuO; SmBaCuO thin films; SrTiO/sub 3/; XRD characterizations; critical temperature; deposition parameters; growth conditions; metallic behavior; oriented magnesium oxide; oxygen pressure; pulsed laser deposition; reactive oxygen atmosphere; strontium titanate; substrate temperature; Atmosphere; Magnesium oxide; Optical pulses; Pulsed laser deposition; Sputtering; Strontium; Substrates; Temperature; Titanium compounds; Transistors;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
