Magnetic order of Au nanoparticle with clean surface

Ryuju Sato, Soichiro Ishikawa, Hiroyuki Sato, Tetsuya Sato

研究成果: Article査読

3 被引用数 (Scopus)


Au nanoparticles, which are kept in vacuum after the preparation by gas evaporation method, show ferromagnetism even in 1.7 nm in diameter. The intrinsic magnetism is examined by detecting the disappearance of spontaneous magnetization in Au bulk prepared by heating the nanoparticles without exposure to the air. The temperature dependence of spontaneous magnetization is not monotonic and the increase in magnetization is observed after Au nanoparticles are exposed to the air. The magnetic behavior can be interpreted by the ferrimagnetic-like core-shell structure with shell thickness of 0.16±0.01 nm and magnetic moment of (1.5±0.1)×10-2 μB/Au atom, respectively.

ジャーナルJournal of Magnetism and Magnetic Materials
出版ステータスPublished - 2015 6 4

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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