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RF dynamics in nanoparticle systems with tuned strength of interactions

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6 Author(s)
Spinu, L. ; Adv. Mater. Res. Inst., New Orleans Univ., LA, USA ; Tung, L.D. ; Kolesnichenko, V. ; Fang, J.
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The dynamic response in a large experimental time window (10-6-102 s) of Co and CoPt nanoparticle systems is reported. In order to reveal the dynamics effects, along with classic experiments as a.c. susceptibility and static magnetic measurements, a RF temperature dependent transverse susceptibility experiment is used. To study the effect of interaction between particles, samples of Co and CoPt nanoparticles dispersed in an insulating matrix in different volume fractions were investigated.

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Magnetics, IEEE Transactions on  (Volume:38 ,  Issue: 5 )