Dynamic Magnetic Properties of the Spin-3/2 Ising Model on a Cylindrical Nanowire in an Oscillating Magnetic Field

The study of the magnetic properties of materials have attracted the interest of scientists for ages. Knowing the magnetic properties of materials do their best possible use in industry and technology, as well as better understanding of some yet unexplained phenomena in nature related to the Earth's magnetic field. Several models that describe the given phenomenon are known, such as the domino model, two-dimensional Ising model and model of inversion magnetic Earth's field. In computer experiments whose results are presented in this paper, it is used a simplified two-dimensional Ising model, one version of the model related spins. Computer experiments (simulations) are made in the mathematical software Maple. It has been observed reversing the direction of magnetization in a small change of inhomogeneity energy interactions. Consideration of this issue could be of importance for the study of ferromagnetic material.

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To the Theory of Hyperthermia Effect Induced by Magnetic Nanoparticles

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.233-234.771 ◽

2015 ◽

Vol 233-234 ◽

pp. 771-775 ◽

Cited By ~ 1

Author(s):

Andrey Zubarev ◽

Ali Abu-Bakr

Keyword(s):

Magnetic Field ◽

Magnetic Properties ◽

Magnetic Nanoparticles ◽

Heat Production ◽

Particle Rotation ◽

Carrier Liquid ◽

Linearly Polarized ◽

Dilute Suspension ◽

Oscillating Magnetic Field ◽

Ferromagnetic Particles

In this paper, we present results of theoretical modeling of the rise of temperature for the unit of time in a dilute suspension of the fiber ferromagnetic particles under the action of the linearly polarized oscillating magnetic field. Two mechanisms of the heat production, namely the particle rotation in the liquid and its internal remagnetization are considered. We study effect of the particle shape, its magnetic properties and rheological properties of the carrier liquid on the rise of temperature for the unit of time by the particles.

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Monte Carlo Modelling of Magnetic and Thermodynamic Features of Rb3CoCl5 and Dy3Al5O12 Magnetic Systems

Sensor Letters ◽

10.1166/sl.2020.4283 ◽

2020 ◽

Vol 18 (9) ◽

pp. 719-724

Author(s):

A. Hendi ◽

A. Bamuqaddam ◽

Shatha A. Aldaghfag ◽

F. Alkallas ◽

M. Almoneef ◽

...

Keyword(s):

Magnetic Field ◽

Phase Transition ◽

Magnetic Material ◽

Monte Carlo ◽

Magnetic Properties ◽

Ising Model ◽

Magnetic Phase ◽

Pyrochlore Structure ◽

Earth Metal ◽

Magnetic Systems

In our simulations, we considered two typical magnetic materials, while the first one includes the 3d-transition metal, such as cobalt which is responsible of the presence of magnetism in pyrochlore structure Rb3CoCl5. The second magnetic material was chosen to have 4f-rare earth metal, namely dysprosium that can induce magnetism in garnet material Dy3Al5O12. A general agreement was found between our results and the previous works. In our calculations, we employed the classical Ising model for the above mentioned realistic materials. We specifically studied the magnetic properties over a range of temperature including the critical temperature and above it. To understand the magnetic phase transition, the effect of magnetic field was involved in the classical Ising model.

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