Auを中心とする貴金属ナノ粒子のスピン偏極と表面効果  [in Japanese] Spin Polarization and Surface Effects on Au- and Some Other Noble Metal Nanoparticles  [in Japanese]

Access this Article

Search this Article

Author(s)

Abstract

  Ferromagnetic spin polarizations on the samples of Au nanoparticles surrounded by protectives were observed by MCD method on X-ray (XMCD) of Au L<sub>3</sub>-edgge to investigate the origin of the spin polarization. The consistency between both magnetization data by SQUID and XMCD are quite well and the result means that the observed magnetization is originated from the Au-nanoparticle itself. The protectives make some slight effect on the magnetization, but the protective of DT (Dodecane thiol) makes quite big reduction of the magnetization. The protective dependence directly means that the origin of the spin polarization arises from the surface of the nanoparticles. Diameter dependence of the surface magnetization on Au-nanoparticles is linearly decreasing with increasing diameter and the data sharply close to the value of bulk state Au-metal at the diameter of 4 nm. The results also make us infer close relation between surface and magnetization and the possibility of wide applications of nanosized materials.<br>

Journal

  • Journal of the Vacuum Society of Japan

    Journal of the Vacuum Society of Japan 51(11), 743-748, 2008-11-20

    The Vacuum Society of Japan

References:  12

Codes

  • NII Article ID (NAID)
    10024858202
  • NII NACSIS-CAT ID (NCID)
    AN00119871
  • Text Lang
    JPN
  • Article Type
    REV
  • ISSN
    18822398
  • NDL Article ID
    9749721
  • NDL Source Classification
    ZN15(科学技術--機械工学・工業--流体機械)
  • NDL Call No.
    Z16-474
  • Data Source
    CJP  NDL  J-STAGE 
Page Top