Effect of the sign of anisotropy constants on the properties of the system of interacting ferromagnetic nanoparticles
M. Sadek , M. Marchwiany , M. Woinska , A. Majhofer , Jacek Gosk , A. Twardowski , J. Szczytko
AbstractWe use the Monte Carlo simulation method to investigate the influence of the signs of magnetocrystalline anisotropy constants and the magnetic dipole-dipole interactions on the zero field cooled-field cooled magnetization experiments and hysteresis curves of a system of magnetic nanoparticles. Positive first cubic anisotropy constant K1 results in larger blocking temperatures and larger coercive fields of a system, while the second anisotropy constant K2 is practically of negligible importance for the phenomena investigated. Magnetic dipole-dipole interactions are important only in the most dense systems of particles and their effects practically disappear for systems where the distance between the closest particles exceeds three particle diameters.
|Journal series||Acta Physica Polonica A, ISSN 0587-4246|
|Publication size in sheets||0.3|
|Keywords in English||Anisotropy; Dipole moment; Electric dipole moments; Intelligent systems; Magnetism; Magnetocrystalline anisotropy; Monte Carlo methods; Nanoparticles, Anisotropy constants; Blocking temperature; Ferromagnetic nanoparticles; Magnetic dipole-dipole interaction; Magnetic nano-particles; Magnetocrystalline anisotropy constant; Monte Carlo simulation methods; Zero field cooled-field cooled magnetizations, Nanomagnetics|
|Score|| = 15.0, 28-11-2017, ArticleFromJournal|
= 15.0, 28-11-2017, ArticleFromJournal
|Publication indicators||: 2016 = 0.469 (2) - 2016=0.489 (5)|
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