@article{a14e912ad5a542a1add95dfdad1bf2e0,
title = "Magneto-optical effects in nanosandwich array with plasmonic structure of Au/ [Co/Pt] n /Au",
abstract = "Nanodisk array with both sandwich structure of Au/ [Co/Pt] n /Au and [Co/Pt] n were fabricated by electron-beam lithography combined with ion milling process. Optical transmittance spectra revealed the excitation of localized surface plasmon resonance (LSPR) in Au/ [Co/Pt] n /Au nanosandwich array. Magneto-optical (MO) properties were measured by a micro-Faraday system with objective lens design and laser source. Faraday rotation angle for sandwich structure increased considerably compared to that of [Co/Pt] n, indicating enhancement in MO activity by excitation of LSPR. The optical and MO properties of nanosandwich array were fitted in the framework of average field approximation.",
author = "Du, {Guan Xiang} and Tetsuji Mori and Michiaki Suzuki and Shin Saito and Hiroaki Fukuda and Migaku Takahashi",
note = "Funding Information: This work was partly supported by JSPS program of Postdoctoral Fellowship for Foreign researchers (Grant-in-Aid No. 2109282). FIG. 1. (a) SEM image of nanodisk array and schematic view of nanosandwich consisting of Au / [ Co / Pt ] n / Au , double-ended arrow shows the relative polarization of light with respect to the array at normal incidence. (b) Permittivity of Gold continuous film and [ Co ( 0.5 ) / Pt ( 1 ) ] n multilayer for wavelength of 400–800 nm. FIG. 2. (a) Transmittance spectra of [ Co / Pt ] 7 , Au, and Au / [ Co / Pt ] 7 / Au nanodisk array with the same size d of 108 nm. LSPR was excited for both Au and Au / [ Co / Pt ] n / Au indicated by arrows. Solid line shows the fitted data for gold nanodisk array. (b) Illustration diagram of the fitting model in which nanodisk array was approximated by a slab with effective refractive index n eff and thickness t eff . FIG. 3. (a) Rotation angle, (b) ellipticity, and (c) transmittance of nanosandwich array as a function of disk diameter at 633 nm, both experimental and fitting data are shown in each panel. Rotation angle and ellipticity of [ Co / Pt ] n nanodisk array are shown in (a) and (b), respectively, for comparison. ",
year = "2010",
month = may,
day = "1",
doi = "10.1063/1.3368110",
language = "English",
volume = "107",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics",
number = "9",
}