Polar Kerr spectroscopy of granular Fe50Pt50-Ag composite films

Zhengang Zhang; Kyongha Kang; Takao Suzuki

doi:10.1117/12.510263

9 April 2003 Polar Kerr spectroscopy of granular Fe₅₀Pt₅₀-Ag composite films

Zhengang Zhang, Kyongha Kang, Takao Suzuki

Proceedings Volume 5060, Sixth International Symposium on Optical Storage (ISOS 2002); (2003) https://doi.org/10.1117/12.510263
Event: Sixth International Symposium on Optical Storage (ISOS 2002), 2002, Wuhan, China

Abstract

Nano-granular Fe₅₀Pt₅₀-Ag composite films are fabricated by annealing the precursor multilayer. Magneto-optical polar Kerr effect and optical constants of these films are measured with photon energy in the range of 1.4 eV to 6.8 eV. Upon considering the multiple reflection and optical interference effect caused by substrate, the diagonal and off diagonal elements of dielectric tensor are calculated out. Plasma resonance of Ag gives an absorption peak at around 3.8 eV. However, the Kerr effect does not show an obvious enhancement at this Ag plasma edge. The optical interference effect and granular structure of these films move the negative peaks in Kerr effect to the lower energy side.

Citation Download Citation

Zhengang Zhang, Kyongha Kang, and Takao Suzuki "Polar Kerr spectroscopy of granular Fe₅₀Pt₅₀-Ag composite films", Proc. SPIE 5060, Sixth International Symposium on Optical Storage (ISOS 2002), (9 April 2003); https://doi.org/10.1117/12.510263

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