Magneto-plasmonic nanostructure for magneto-plasmonic self temperature control device

2014 Fiscal Year Final Research Report

• Project/Area Number: 25630116
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Electronic materials/Electric materials
• Research Institution: Tohoku University
• Principal Investigator: SAITO Shin 東北大学, 工学(系)研究科(研究院), 准教授 (50344700)
• Research Collaborator: MEGURO Sakae ネオアーク株式会社, 製造技術部, 部長代理 ; ISOGAMI Shinji 福島工業高等専門学校, 一般教科, 准教授 (10586853)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: プラズモン / スピン依存散乱 / 光学特性 / 誘電率スペクトル / キュリー温度

Outline of Final Research Achievements

Effect of spin-dependent scattering on the optical properties were studied by evaluating the transmittance spectra of ferromagnetic MnSb thin film and Au/ MnSb composite nanostructure, between wavelength of 200 and 1700 nm and temperature from 25 to 375℃. It was found that: (1) large shift in temperature dependent of dielectric constant at long wavelength region was observed; (2) tendency change of temperature dependent of resistivity and scattering time of conduction electron at around the Curie temperature suggested that the spin-dependent scattering is reflected in the Drude term; (3) in composite nanostructure with ferromagnetic and Au layer, the effect of spin-dependent scattering appeared in the conditions variation of Localized Surface Plasmon Resonance (LSPR).

Free Research Field

電気・電子材料