TY - JOUR
T1 - Temperature dependence of reversible and irreversible magnetization of the discontinuous ultrathin Fe films
AU - Shiratsuchi, Yu
AU - Endo, Yasushi
AU - Yamamoto, Masahiko
N1 - Funding Information:
This work is supported by a Grant-in-Aid for General Scientific Research (S), and “Priority Assistance of the Formation of Worldwide Renowned Centers of Research—The 21st Century COE Program (Project: Center of Excellence for Advanced Structural and Functional Materials Design)” from the Japanese Ministry of Education, Sports, Culture, Science and Technology.
PY - 2007/3
Y1 - 2007/3
N2 - We have investigated the details of zero-field-cooled magnetization of the superparamagnetic ultrathin Fe films from the temperature dependence of reversible and irreversible magnetization. We provide the interpretation of the magnetic field dependence of peak temperature. At the low growth temperature around 323 K, the behavior of peak temperature against the field is expressed by the Néel model. On the other hand, the peak temperature increases with increasing field for the films grown at high temperature around 773 K. The increase of peak temperature is explained by considering the reversible magnetization as a dominant mechanism.
AB - We have investigated the details of zero-field-cooled magnetization of the superparamagnetic ultrathin Fe films from the temperature dependence of reversible and irreversible magnetization. We provide the interpretation of the magnetic field dependence of peak temperature. At the low growth temperature around 323 K, the behavior of peak temperature against the field is expressed by the Néel model. On the other hand, the peak temperature increases with increasing field for the films grown at high temperature around 773 K. The increase of peak temperature is explained by considering the reversible magnetization as a dominant mechanism.
KW - Irreversible magnetization
KW - Reversible magnetization
KW - Superapramagnetism
KW - Zero-field-cooled magnetization
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U2 - 10.1016/j.jmmm.2006.10.803
DO - 10.1016/j.jmmm.2006.10.803
M3 - Article
AN - SCOPUS:33847678933
SN - 0304-8853
VL - 310
SP - e756-e758
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
IS - 2 SUPPL. PART 3
ER -