Magnetic Study of the Fe Coated by Au Nanoparticles

• Authors: A. Zeleňáková , J. Kováč , V. Kavečanský , V. Zeleňák
• Languages of publication: EN

Abstracts

EN

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 T_B, and revealing of coercivity H_C below blocking temperature. The quantitative analysis of AC susceptibility due to value of parameter C_1 = ΔT_B/(T_B Δ log f)=0.0242 confirming the existence of inter-particle interaction in our system.

Keywords

EN

61.46.Df; 68.37.Lp; 75.20.-g; 75.30.Cr

Discipline

• 75.30.Cr: Saturation moments and magnetic susceptibilities
• 68.37.Lp: Transmission electron microscopy (TEM)
• 75.20.-g: Diamagnetism, paramagnetism, and superparamagnetism
• 61.46.Df: Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 113
• Issue: 1
• Pages: 533-536

Dates

published

2008-01

received

2007-07-09

Contributors

author

A. Zeleňáková

• Dept. of Solid State Physics, UPJŠ, Park Angelinum 9, 041 54 Košice,

author

J. Kováč

• Institute of Exp. Physics, SAS, Park Angelinum 9, 040 01 Košice, Slovakia

author

V. Kavečanský

• Institute of Exp. Physics, SAS, Park Angelinum 9, 040 01 Košice, Slovakia

author

V. Zeleňák

• Dept. of Inorganic Chemistry, UPJŠ, Moyzesova 51, 040 01 Košice, Slovakia

References

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• 2. J.A. De Torro, M.A. de la Torre, J.M. Riveiro, R. Sáez Puche, A. Gómez-Herrero, L.C. Otero-Díaz, Phys. Rev. B 60, 12918 (1999)
• 3. M. Tadic, D. Markovic, V. Spasojevic, V. Kusigerski, M. Remškar, J. Pirnat, Z. Jagličićt, J. Alloys Comp., in press
• 4. S.K. Sharma, R. Kumar, S. Kumar, V.V.S. Kumar, M. Knobel, V.R. Reddy, A. Banerjee, M. Singh, Solid State Commun. 141, 203 (2007)
• 5. A. Kakay, W.M. Gutowski, L. Takacs, L.K. Varga, J. Phys. A 37 , 6027 (2004)
• 6. A. Zeleňáková, V. Zeleňák, J. Degmová, J. Kováč, K. Sedláčková, M. Kusý, J. Sitek, J. Alloys Comp., accepted for publication

Identifiers

DOI

10.12693/APhysPolA.113.533