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Spectroscopic ellipsometry study of FePt nanoparticle films

✍ Scribed by Lee, S. J. ;Lo, C. C. H. ;Yu, A. C. C. ;Fan, M.

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
317 KB
Volume
203
Category
Article
ISSN
0031-8965

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✦ Synopsis

Abstract

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 Β°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. (Β© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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