AC Magnetic Susceptibility Study of Fe and Co Based Nanoparticles

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

Abstracts

EN

We have investigated magnetic properties of three different samples composed of magnetic Fe or Co core and protective Au or Pt metallic shell, namely Fe@Au, Co@Au and Fe@Pt samples, with sizes of about 10 nm, 8 nm and 5 nm respectively. We have measured and analysed the experimental data of real and imaginary component of ac susceptibility through theoretical laws for non-interacting and interacting particles and we have estimated the strength of their magnetic interactions. Our analyses showed the increase of inter-particle interactions with decreasing particles size.

Keywords

EN

75.75.Fk; 81.05.Rm; 75.40.Cx

Discipline

• 75.40.Cx: Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.)
• 81.05.Rm: Porous materials; granular materials(for granular superconductors, see 74.81.Bd)
• 75.75.Fk: Domain structures in nanoparticles

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 126
• Issue: 1
• Pages: 222-223

Dates

published

2014-07

Contributors

author

A. Zeleňáková

• Institute of Physics, Faculty of Sciences, P.J. Šafárik University, Park Angelinum 9, 041 54 Košice, Slovakia

author

J. Kováč

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 41, 041 54 Košice, Slovakia

author

V. Zeleňák

• Institute of Chemistry, Faculty of Sciences, P.J. Šafárik University, Moyzesova 11, 041 54 Košice, Slovakia

References

• [1] S. Morup, M.F. Hansen, C. Frandsen, Beilstein J. Nanotechnol 1, 182 (2010), doi: 10.3762/bjnano.1.22
• [2] S. Bedanta, W. Kleemann, J. Phys. D: Appl. Phys 42, 013001 (2009), doi: 10.1088/0022-3727/42/1/013001
• [3] Y. Bitla, S.N. Kaul, L. Fernández Barquín, Phys. Rev. B 86, 094405 (2012), doi: 10.1103/PhysRevB.86.094405
• [4] A. Zelenakova, J. Kovac, V. Zelenak, Acta Phys. Pol. A 115, 357 (2009)

Identifiers

DOI

10.12693/APhysPolA.126.222