Scaling relations for magnetic nanoparticles
Physical Review B—Condensed Matter and Materials Physics, 2005•APS
A detailed investigation of the scaling relations recently proposed [J. d'Albuquerque e
Castro, D. Altbir, JC Retamal, and P. Vargas, Phys. Rev. Lett. 88, 237202 (2002)] to study the
magnetic properties of nanoparticles is presented. Analytical expressions for the total energy
of three characteristic internal configurations of the particles are obtained, in terms of which
the behavior of the magnetic phase diagram for those particles upon scaling of the
exchange interaction is discussed. The exponent η in scaling relations is shown to be …
Castro, D. Altbir, JC Retamal, and P. Vargas, Phys. Rev. Lett. 88, 237202 (2002)] to study the
magnetic properties of nanoparticles is presented. Analytical expressions for the total energy
of three characteristic internal configurations of the particles are obtained, in terms of which
the behavior of the magnetic phase diagram for those particles upon scaling of the
exchange interaction is discussed. The exponent η in scaling relations is shown to be …
A detailed investigation of the scaling relations recently proposed [J. d’Albuquerque e Castro, D. Altbir, J. C. Retamal, and P. Vargas, Phys. Rev. Lett. 88, 237202 (2002)] to study the magnetic properties of nanoparticles is presented. Analytical expressions for the total energy of three characteristic internal configurations of the particles are obtained, in terms of which the behavior of the magnetic phase diagram for those particles upon scaling of the exchange interaction is discussed. The exponent in scaling relations is shown to be dependent on the geometry of the vortex core, and results for specific cases are presented.
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