Anisotropic effect of dipolar interaction in ordered ensembles of nanoparticles

Anand, Manish

doi:10.1007/s11051-022-05424-4

Cited by 2 publications

(1 citation statement)

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“…Although at the atomic scale in magnetic materials, the exchange interaction suppresses the dipolar interaction, at the nanoscale, unexpected and intricate properties for magnetic particles and clustered structures are primarily triggered by the dipolar interaction [20]. With many modifications, the dipolar interactions can also decide the system's ground state owing to its long-ranged and anisotropic character [21]. For example, it has been demonstrated that in two dimensions, the ground state configuration is ferromagnetic coupling in triangular lattice [22], whereas square lattice exhibits antiferromagnetic coupling [23].…”

Section: Introductionmentioning

confidence: 99%

Effect of the dipolar interaction on the dynamic hysteresis properties of 2D-nanodisks: out of plane driving field case

Çam,

Akıncı

2023

Phys. Scr.

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We have systematically investigated the effect of dipolar interaction strength on the dynamical hysteresis behavior of the in-plane uniaxial anisotropic nanodisk system modeled by the classical Heisenberg model under the effect of the time-dependent external out-of-plane periodic magnetic field. Dynamical hysteresis loops, as well as hysteresis quantities (hysteresis loop area, coercive field, remanent magnetization), have been examined both in-plane and out-of-plane magnetization components by means of Monte Carlo simulation based on Metropolis Algorithm. Our simulation results suggest that the response of the in-plane and out-of-plane components of the magnetization have different hysteresis characteristics. For instance, while the out-of-plane component of the magnetization has ordinary dynamically disordered hysteresis curves, bowtie-shaped hysteresis loops have been obtained for the in-plane component of the magnetization. Disappeared dynamical order has been observed with the rising strength of the dipolar interaction.

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