IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Dipolar interaction and demagnetizing effects in magnetic nanoparticle dispersions
Autor/es:
F.H. SÁNCHEZ; P. MENDOZA ZÉLIS; L. ARCINIEGAS VACA; G. PASQUEVICH; M.B. FERNÁNDEZ VAN RAAP
Lugar:
La Plata
Reunión:
Encuentro; VI National Meeting of solid state physics 2015; 2015
Institución organizadora:
UNLP
Resumen:
The problem of the influence of dipolar interactions on the magnetic response of nanoparticle (NP) dispersions has been a concern for decades and the subject of numerous papers [1,2,3,4,5].Although important advances were made, relevant aspects of dipolar interaction influence on NP response are frequently neglected, especially due to the lack of a simple conceptual frame useful for the treatment of this problem. Dipolar interactions between the NPs belonging to a solid or liquid dispersion give rise to modifications of susceptibility and NP magnetic moment characteristic time, in comparison to the values of these quantities in the absence of interactions.The appropriate description of this problem is relevant for applications of single domain magnetic NPs, for example in biomedicine. [1] R. López-Ruiz, F. Luis, J. Sesé, J. Bartolomé, C. Deranlot and F. Petroff, Europhysics Letters 89 67011 (2010),doi:10.1209/0295-5075/89/67011[2] B. Hillebrands, S.O. Demokritov, C. Mathieu, S. Riedling, O. Büttner, A. Frank, B. Roos, J. Jorzick, A.N. Slavin, B. Bartenlian, C. Chappert, F. Rousseaux, D. Decanini, E. Cambril, A. Müller, U. Hartmann, Preprint Server AG Hillebrands: http://www.physik.uni-kl.de/w_hilleb, J. Mag. Soc. Jpn. 23, 670 (1999)[3] R. K. Das, S. Rawal, D. Norton, and A. F. Hebard, J. Appl. Phys. 108, 123920 (2010), doi:10.1063/1.3524277[4] Paolo Allia, Paola Tiberto, J Nanopart Res 13 7277 (2011), DOI 10.1007/s11051-011-0642-2[5] Gabriel T. Landi, Journal of Applied Physics 113, 163908 (2013); doi: 10.1063/1.4802583
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