Effect of Surface Anisotropy in Core-Shell Bimetallic Nanoparticles

• Authors: E. Tornau , V. Petrauskas , O. Crisan
• Languages of publication: EN

Abstracts

EN

Temperature dependences of magnetization of core-shell-type nanoparticles with non-magnetic core and ferromagnetic shell are obtained using Monte Carlo simulation. The influence of surface spin disorder of the ferromagnetic shell on overall shape of magnetization curve is analyzed. The magnetic state diagram (in shell thickness - surface anisotropy coordinates), separating collinear and non-collinear states, is determined.

Keywords

EN

75.75.+a; 75.40.Mg; 75.30.Et

Discipline

• 75.30.Et: Exchange and superexchange interactions(see also 71.70.Gm Exchange interactions)
• 75.40.Mg: Numerical simulation studies

• Journal: Acta Physica Polonica A
• Year: 2005
• Volume: 107
• Issue: 2
• Pages: 425-428

Dates

published

2005-02

received

2004-08-22

Contributors

author

E. Tornau

• Semiconductor Physics Institute, Goštauto 11, 01108 Vilnius, Lithuania

author

V. Petrauskas

• Semiconductor Physics Institute, Goštauto 11, 01108 Vilnius, Lithuania

author

O. Crisan

• Department of Physics, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece

References

• 1. O. Crisan, M. Angelakeris, M. Noguès, Th. Kehagias, Ph. Komninou, E.N. Sobal, M. Giersig, N.K. Flevaris, J. Magn. Magn. Mater., 272-276S, E1253, 2004
• 2. D. Zitouin, M. Respaud, M-C. Fromen, M. J. Casanove, P. Lecante, C. Amiens, B. Chaudret, Phys. Rev. B, 89, 037203, 2002
• 3. D.A. Dimitrov, G.M. Wysin, Phys. Rev. B, 50, 3077, 1994; 51, 11947, 1995
• 4. Y. Labaye, O. Crisan, L. Berger, J.M. Greneche, J.M.D. Coey, J. Appl. Phys., 91, 8715, 2002
• 5. R.H. Kodama, A.E. Berkowitz, Phys. Rev. B, 59, 6321, 1999
• 6. H. Kachkachi, M. Dimian, Phys. Rev. B, 66, 174419, 2002

Identifiers

DOI

10.12693/APhysPolA.107.425