Abstract
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<sup>-2</sup> μ<inf>B</inf>/Au atom, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 209-212 |
| Number of pages | 4 |
| Journal | Journal of Magnetism and Magnetic Materials |
| Volume | 393 |
| DOIs | |
| Publication status | Published - 2015 Jun 4 |
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Keywords
- Au nanoparticle
- Ferromagnetism
- Gas evaporation method
ASJC Scopus subject areas
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
Cite this
Magnetic order of Au nanoparticle with clean surface. / Sato, Ryuju; Ishikawa, Soichiro; Sato, Hiroyuki; Sato, Tetsuya.
In: Journal of Magnetism and Magnetic Materials, Vol. 393, 04.06.2015, p. 209-212.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Magnetic order of Au nanoparticle with clean surface
AU - Sato, Ryuju
AU - Ishikawa, Soichiro
AU - Sato, Hiroyuki
AU - Sato, Tetsuya
PY - 2015/6/4
Y1 - 2015/6/4
N2 - 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.
AB - 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.
KW - Au nanoparticle
KW - Ferromagnetism
KW - Gas evaporation method
UR - http://www.scopus.com/inward/record.url?scp=84930652897&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84930652897&partnerID=8YFLogxK
U2 - 10.1016/j.jmmm.2015.05.072
DO - 10.1016/j.jmmm.2015.05.072
M3 - Article
AN - SCOPUS:84930652897
VL - 393
SP - 209
EP - 212
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
ER -