TY - JOUR
T1 - High-frequency ferromagnetic resonance in Nd2Fe14B/α-Fe nanocomposite films
AU - Kato, H.
AU - Ishizone, M.
AU - Miyazaki, T.
AU - Koyama, K.
AU - Nojiri, H.
AU - Motokawa, M.
AU - Ishizaki, T.
N1 - Funding Information:
Manuscript received October 11, 2000. This work was supported in part by the Mazda Foundation and by Iketani Science and Technology Foundation. H. Kato, T. Ishizaki, and T. Miyazaki are with the Department of Applied Physics, Graduate School of Engineering, Tohoku University, Aoba-yama 08, Sendai 980-8579 Japan (e-mail: kato@mlab.apph.tohoku.ac.jp). K. Koyama, H. Nojiri, and M. Motokawa are with the Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan. Publisher Item Identifier S 0018-9464(01)07152-7.
PY - 2001/7
Y1 - 2001/7
N2 - Thin-film magnets, composed of nanophase dispersed Nd2Fe14B and α-Fe have been synthesized by rf magnetron sputtering. With increasing α-Fe volume fraction VFe, the saturation magnetization increased linearly, while the coercivity decreased. Ferromagnetic resonance measurements were made by using a high-frequency and high-field ESR apparatus, which exhibited two absorption peaks. A model calculation of the resonance field was made for a simplified hard/soft two-sublattice system to analyze these results. Estimated values of the exchange-coupling constant are in good agreement with those deduced from micro-magnetic analysis of the magnetization curves.
AB - Thin-film magnets, composed of nanophase dispersed Nd2Fe14B and α-Fe have been synthesized by rf magnetron sputtering. With increasing α-Fe volume fraction VFe, the saturation magnetization increased linearly, while the coercivity decreased. Ferromagnetic resonance measurements were made by using a high-frequency and high-field ESR apparatus, which exhibited two absorption peaks. A model calculation of the resonance field was made for a simplified hard/soft two-sublattice system to analyze these results. Estimated values of the exchange-coupling constant are in good agreement with those deduced from micro-magnetic analysis of the magnetization curves.
KW - Exchange coupling
KW - Ferromagnetic resonance
KW - Nanocomposite magnet
KW - Thin film
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U2 - 10.1109/20.951237
DO - 10.1109/20.951237
M3 - Conference article
AN - SCOPUS:0035386330
SN - 0018-9464
VL - 37
SP - 2567
EP - 2569
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
IS - 4 I
T2 - 8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag)
Y2 - 7 January 2001 through 11 January 2001
ER -