Magneto-optical effects in nanosandwich array with plasmonic structure of Au/ [Co/Pt] n /Au

Guan Xiang Du, Tetsuji Mori, Michiaki Suzuki, Shin Saito, Hiroaki Fukuda, Migaku Takahashi

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

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.

Original languageEnglish
Article number09A928
JournalJournal of Applied Physics
Volume107
Issue number9
DOIs
Publication statusPublished - 2010 May 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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