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Materials 2016, 9(1), 23; doi:10.3390/ma9010023

Optical and Magneto-Optical Properties of Gd22Fe78 Thin Films in the Photon Energy Range From 1.5 to 5.5 eV

1
Department of Materials Science and Technology, Nagaoka University of Technology, Nagaoka, Niigata 1603-1, Japan
2
Institute of Physics, Charles University, Prague 12116, Czech Republic
3
Science and Technology Research Laboratories, Japan Broadcasting Corporation (NHK), Tokyo 157-8510, Japan
*
Authors to whom correspondence should be addressed.
Academic Editor: Beatriz Noheda
Received: 18 November 2015 / Revised: 16 December 2015 / Accepted: 22 December 2015 / Published: 2 January 2016
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Abstract

Optical and magneto-optical properties of amorphous Gd22Fe78 (GdFe) thin films prepared by direct current (DC) sputtering on thermally oxidized substrates were characterized by the combination of spectroscopic ellipsometry and magneto-optical spectroscopy in the photon energy range from 1.5 to 5.5 eV. Thin SiNx and Ru coatings were used to prevent the GdFe surface oxidation and contamination. Using advanced theoretical models spectral dependence of the complete permittivity tensor and spectral dependence of the absorption coefficient were deduced from experimental data. No significant changes in the optical properties upon different coatings were observed, indicating reliability of used analysis. View Full-Text
Keywords: GdFe; magneto-optics; spectroscopic ellipsometry GdFe; magneto-optics; spectroscopic ellipsometry
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Jesenská, E.; Hashinaka, T.; Ishibashi, T.; Beran, L.; Dušek, J.; Antoš, R.; Kuga, K.; Aoshima, K.-I.; Machida, K.; Kinjo, H.; Veis, M. Optical and Magneto-Optical Properties of Gd22Fe78 Thin Films in the Photon Energy Range From 1.5 to 5.5 eV. Materials 2016, 9, 23.

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