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Spectroscopic ellipsometry study of FePt nanoparticle films
Author(s) -
Lee S. J.,
Lo C. C. H.,
Yu A. C. C.,
Fan M.
Publication year - 2006
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200521480
Subject(s) - nanoparticle , materials science , thin film , ellipsometry , refractive index , substrate (aquarium) , molar absorptivity , deposition (geology) , analytical chemistry (journal) , nanotechnology , optoelectronics , optics , chemistry , chromatography , paleontology , oceanography , physics , sediment , geology , biology
The optical properties of a FePt nanoparticle film were investigated using spectroscopic ellipsometry. The FePt nanoparticle film of thickness about 15 nm was prepared by deposition of FePt nanoparticles directly on a Si substrate. The nanoparticle film was annealed at 600 °C in vacuum for two hours before the measurements. The optical properties of the FePt nanoparticle film showed distinctively different spectra from those obtained from the bulk and thin film FePt samples, in particular in the low photon energy range (below 3.5 eV) where the nanoparticle film exhibited a relatively flat refractive index and a substantially lower extinction coefficient than the bulk and epitaxial thin film samples. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)