TY - GEN
T1 - Magnetism of ultrathin Fe films in the vicinity of transition from ferromagnetism to superparamagnetism
AU - Shiratsuchi, Yu
AU - Endo, Yasushi
AU - Yamamoto, Masahiko
PY - 2006
Y1 - 2006
N2 - We have investigated the magnetism of ultrathin Fe films grown on the inclined Al2O3(0001), especially, in the vicinity of ferromagnetic-superparamagnetic transition. In the transition region, the magnetic state of Fe films is the coexistence of ferromagnetism and superparamagnetism. The ratio of the components in ferromagnetic and superparamagnetic state is dependent on the growth temperature. For Fe grown on the flat substrate without the inclination, as the growth temperature increases, the ratio of the component in ferromagnetic state increases, reaches to the maximum and decreases again. On the presence of substrate inclination, the ratio of the component in ferromagnetic state increases, reaches to the maximum and decreases again, decreases monotonically with increasing growth temperature. We investigated the dominant factor of the complex magnetic state, and clarified that the complex magnetic state is dominated by the change of the film structure and the effective magnetic anisotropy energy.
AB - We have investigated the magnetism of ultrathin Fe films grown on the inclined Al2O3(0001), especially, in the vicinity of ferromagnetic-superparamagnetic transition. In the transition region, the magnetic state of Fe films is the coexistence of ferromagnetism and superparamagnetism. The ratio of the components in ferromagnetic and superparamagnetic state is dependent on the growth temperature. For Fe grown on the flat substrate without the inclination, as the growth temperature increases, the ratio of the component in ferromagnetic state increases, reaches to the maximum and decreases again. On the presence of substrate inclination, the ratio of the component in ferromagnetic state increases, reaches to the maximum and decreases again, decreases monotonically with increasing growth temperature. We investigated the dominant factor of the complex magnetic state, and clarified that the complex magnetic state is dominated by the change of the film structure and the effective magnetic anisotropy energy.
KW - Ferromagnetism
KW - Superparamagnetism
KW - Ultrathin Fe film
UR - http://www.scopus.com/inward/record.url?scp=35748981511&partnerID=8YFLogxK
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U2 - 10.4028/0-87849-996-2.165
DO - 10.4028/0-87849-996-2.165
M3 - Conference contribution
AN - SCOPUS:35748981511
SN - 0878499962
SN - 9780878499960
T3 - Materials Science Forum
SP - 165
EP - 170
BT - Advanced Structural and Functional Materials Design - Proceedings of the International Symposium on Advanced Structural and Functional Materials Design, 2004
PB - Trans Tech Publications Ltd
T2 - International Symposium on Advanced Structural and Functional Materials Design, 2004
Y2 - 10 November 2004 through 12 November 2004
ER -