title: Plasmonically enhanced Faraday effect in metal and ferrite nanoparticles composite precipitated inside glass.
abstract: Using femtosecond laser irradiation and subsequent annealing, nanocomposite structures composed of spinel-type ferrimagnetic nanoparticles (NPs) and plasmonic metallic NPs have been formed space-selectively within glass doped with both α-Fe(2)O(3) and Al. The Faraday rotation spectra exhibit a distinct negative peak at around 400 nm, suggesting that the ferrimagnetic Faraday response is enhanced by the localized surface plasmon resonance (LSPR) due to metallic Al NPs. At the interfaces in the nanocomposites, the ferrimagnetism of magnetite NPs is directly coupled with the plasmon in the Al NPs. The control of the resonance wavelength of the magneto-optical peaks, namely, the size of plasmonic NPs has been demonstrated by changing the irradiation or annealing conditions.
authors.affiliation: Department of Solid State Materials and Engineering, Graduate School of Engineering, Yokohama National University, 79-5 Tokiwadai, Yokohama, Kanagawa 240-8501, Japan. nakashima@ynu.ac.jp
authors.forename: Seisuke
authors.initials: S
authors.lastname: Nakashima
authors.forename: Koji
authors.initials: K
authors.lastname: Sugioka
authors.forename: Katsuhisa
authors.initials: K
authors.lastname: Tanaka
authors.forename: Masahiro
authors.initials: M
authors.lastname: Shimizu
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Shimotsuma
authors.forename: Kiyotaka
authors.initials: K
authors.lastname: Miura
authors.forename: Katsumi
authors.initials: K
authors.lastname: Midorikawa
authors.forename: Kohki
authors.initials: K
authors.lastname: Mukai
mesh_terms: D011232:Chemical Precipitation; D005898:Glass / Q000737:chemistry*; D008027:Light; D060526:Magnetic Fields; D053768:Metal Nanoparticles / Q000737:chemistry*; D020349:Surface Plasmon Resonance / Q000379:methods*