TY - JOUR
T1 - Electronic and magnetic structures of Fe on a vicinal Au(1 1 1) surface
AU - Fujisawa, H.
AU - Shiraki, S.
AU - Furukawa, M.
AU - Nantoh, M.
AU - Kawai, Maki
AU - Nakamura, T.
AU - Muro, T.
N1 - Funding Information:
This research work is partially supported by Precursory Research for Embryonic Science and Technology (PRESTO), JST. The synchrotron radiation experiments were performed at Spring-8 with the approval of Japan Synchrotron Radiation Research Institute (JASRI) as Nanotechnology Support Project of the Ministry of Education, Culture, Sports, Science and Technology (Proposal No. 2003B0371-NSc-np-Na/BL-No. 25SU).
PY - 2005/6
Y1 - 2005/6
N2 - Magnetic behavior of Fe nanostructures on a vicinal Au(1 1 1) surface have been investigated by X-ray magnetic circular dichroism (XMCD) measurements. It is found that one-dimensional (1D) Fe chains of 2-3 atomic rows exhibit a ferromagnetic long-range order, and have a larger orbital moment in comparison with stripes and two-dimensional (2D) nanostructures. From the temperature-dependent XMCD measurements, the 1D chains exhibit two phase transitions, which are qualitatively ascribed to a ferromagnetic-to- superparamagnetic and a superparamagnetic-to-paramagnetic phase transions. These results suggest that the magnetism of the 1D chains behaves superparamagnetically.
AB - Magnetic behavior of Fe nanostructures on a vicinal Au(1 1 1) surface have been investigated by X-ray magnetic circular dichroism (XMCD) measurements. It is found that one-dimensional (1D) Fe chains of 2-3 atomic rows exhibit a ferromagnetic long-range order, and have a larger orbital moment in comparison with stripes and two-dimensional (2D) nanostructures. From the temperature-dependent XMCD measurements, the 1D chains exhibit two phase transitions, which are qualitatively ascribed to a ferromagnetic-to- superparamagnetic and a superparamagnetic-to-paramagnetic phase transions. These results suggest that the magnetism of the 1D chains behaves superparamagnetically.
KW - Au
KW - Fe
KW - Ferromagnetism
KW - Nanowire X-ray magnetic circular dichroism
KW - Vicinal surface
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U2 - 10.1016/j.elspec.2005.01.021
DO - 10.1016/j.elspec.2005.01.021
M3 - Article
AN - SCOPUS:17444402491
SN - 0368-2048
VL - 144-147
SP - 519
EP - 523
JO - Journal of Electron Spectroscopy and Related Phenomena
JF - Journal of Electron Spectroscopy and Related Phenomena
ER -