Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1667329 | Thin Solid Films | 2012 | 5 Pages |
Abstract
Pulsed Laser Deposition of magnetically ordered polycrystalline SmFeO3 films has been optimized onto SiO2 glass substrates as function of substrate temperature, oxygen pressure and pulsed laser fluency. Using a KrF excimer laser, crystallization temperature is found to be about 1048 K for a weak fluency of only 1.7 J cmâ 2. We show that this growth temperature can be reduced using higher fluency and that it is possible to obtain a film texturation along the c axis by reducing the oxygen pressure at given temperature and fluency. In a second part, we focus on the SmFeO3 optical constants determined by in situ ellipsometry using a stacking model and the Cauchy dispersion relation for SmFeO3 layer. We show a good correlation between the transmission and reflection calculated from these data and measured by ex situ spectrophotometry in the visible range.
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Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Bruno Berini, Jan Mistrik, Yves Dumont, Elena Popova, Arnaud Fouchet, Joseph Scola, Niels Keller,