TY - JOUR
T1 - Tuning magnetic interactions in ferromagnetic-metal nanoparticle systems
AU - Tomita, Satoshi
AU - Akamatsu, Kensuke
AU - Shinkai, Hiroyuki
AU - Ikeda, Shingo
AU - Nawafune, Hidemi
AU - Mitsumata, Chiharu
AU - Kashiwagi, Takanari
AU - Hagiwara, Masayuki
PY - 2005
Y1 - 2005
N2 - We have experimentally studied the structure and magnetic interaction in Ni nanoparticle systems embedded in polymer matrices. The shrinkage of the matrices due to thermal decomposition leads to a decrease in the spacing among the particles, which maintain a fixed diameter of several nanometers. This is accompanied by a significant shift of electron magnetic-resonance signals. Based on the theoretical calculation, the shift is traced back to an enhancement of the magnetic dipolar interaction due to the diminution in the interparticle spacing, suggesting that we have succeeded in tuning the magnetic interaction in the nanoparticle systems.
AB - We have experimentally studied the structure and magnetic interaction in Ni nanoparticle systems embedded in polymer matrices. The shrinkage of the matrices due to thermal decomposition leads to a decrease in the spacing among the particles, which maintain a fixed diameter of several nanometers. This is accompanied by a significant shift of electron magnetic-resonance signals. Based on the theoretical calculation, the shift is traced back to an enhancement of the magnetic dipolar interaction due to the diminution in the interparticle spacing, suggesting that we have succeeded in tuning the magnetic interaction in the nanoparticle systems.
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U2 - 10.1103/PhysRevB.71.180414
DO - 10.1103/PhysRevB.71.180414
M3 - Article
AN - SCOPUS:33644525962
SN - 1098-0121
VL - 71
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 18
M1 - 180414
ER -