Magnetic Study of the Fe Coated by Au Nanoparticles |
| A. Zeleňáková
Dept. of Solid State Physics, UPJŠ, Park Angelinum 9, 041 54 Košice, Slovakia J. Kováč, V. Kavečanský Institute of Exp. Physics, SAS, Park Angelinum 9, 040 01 Košice, Slovakia and V. Zeleňák Dept. of Inorganic Chemistry, UPJŠ, Moyzesova 51, 040 01 Košice, Slovakia |
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| Received: 9 07 2007; |
| Nanosized iron-gold magnetic nanoparticles with an average particle size 10 nm were prepared by a reverse micelle method. The magnetic properties measurements of DC and AC magnetization confirm behaviour typical of a superparamagnetic system, such as the irreversibility of the zero-field-cooled and field-cooled curves, the frequency dependence of a blocking temperature TB, and revealing of coercivity HC below blocking temperature. The quantitative analysis of AC susceptibility due to value of parameter C1=Δ TB/(TBΔlog f)=0.0242 confirming the existence of inter-particle interaction in our system. |
| DOI: 10.12693/APhysPolA.113.533 PACS numbers: 61.46.Df, 68.37.Lp, 75.20.-g, 75.30.Cr |