Monte Carlo Modelling of Magnetic and Thermodynamic Features of Rb3CoCl5 and Dy3Al5O12 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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Magnetic properties and magnetic phase transition in square-octagon lattice: Monte Carlo study

Philosophical Magazine Letters ◽

10.1080/09500839.2021.1922775 ◽

2021 ◽

pp. 1-10

Author(s):

A. Jabar ◽

R. Masrour ◽

M. Hamedoun ◽

A. Benyoussef ◽

A. Hourmatallah ◽

...

Keyword(s):

Phase Transition ◽

Monte Carlo ◽

Magnetic Properties ◽

Magnetic Phase Transition ◽

Magnetic Phase ◽

Monte Carlo Study ◽

Lattice Monte Carlo

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Phase Transition in 2D Anisotropic Ising Model with Next-Nearest Neighbor Interactions in a Magnetic Field

SPIN ◽

10.1142/s2010324718500108 ◽

2018 ◽

Vol 08 (03) ◽

pp. 1850010

Author(s):

D. Farsal ◽

M. Badia ◽

M. Bennai

Keyword(s):

Magnetic Field ◽

Phase Transition ◽

Phase Diagram ◽

Monte Carlo ◽

Magnetic Susceptibility ◽

Critical Temperature ◽

Ising Model ◽

Nearest Neighbor ◽

Two Dimensional ◽

The Magnetic Field

The critical behavior at the phase transition of the ferromagnetic two-dimensional anisotropic Ising model with next-nearest neighbor (NNN) couplings in the presence of the field is determined using mainly Monte Carlo (MC) method. This method is used to investigate the phase diagram of the model and to verify the existence of a divergence at null temperature which often appears in two-dimensional systems. We analyze also the influence of the report of the NNN interactions [Formula: see text] and the magnetic field [Formula: see text] on the critical temperature of the system, and we show that the critical temperature depends on the magnetic field for positive values of the interaction. Finally, we have investigated other thermodynamical qualities such as the magnetic susceptibility [Formula: see text]. It has been shown that their thermal behavior depends qualitatively and quantitatively on the strength of NNN interactions and the magnetic field.

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Giant Magnetocaloric Effect in the Region of Magnetic Phase Transition in Mn (As,Sb) Compounds

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.190.343 ◽

2012 ◽

Vol 190 ◽

pp. 343-346 ◽

Cited By ~ 4

Author(s):

N.Yu. Pankratov ◽

V.I. Mitsiuk ◽

A.I. Krokhotin ◽

A.I. Smarzhevskaya ◽

G.A. Govor ◽

...

Keyword(s):

Magnetic Field ◽

Phase Transition ◽

Magnetic Properties ◽

Room Temperature ◽

Magnetic Phase ◽

Small Concentration ◽

Maximum Value ◽

Giant Magnetocaloric Effect ◽

Magnetic Filed ◽

Direct Investigation

The MCE in MnAs and doped Mn (As,Sb) compounds with low concentration of Sb has been studied by direct investigation. It was shown that for MnAs the maximum value of MCE is ΔT = 0.28 K on heating (at 308 K) and ΔT = 0.88 K on cooling (at T = 306 K) in magnetic filed 12.5 kOe. In doped Mn (As,Sb) compounds the temperature dependence of MCE is similar to MnAs. All investigated compounds demonstrate a strong temperature and field hysteresis of magnetic properties in magnetic field less than 40 kOe. It was established that a small concentration of Sb leads to decrease of MCE hysteresis and preserves the phase transition at room temperature region.

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A RING OF JOSEPHSON-JUNCTIONS IN A MAGNETIC FIELD

International Journal of Modern Physics B ◽

10.1142/s0217979291001711 ◽

1991 ◽

Vol 05 (10) ◽

pp. 1809-1816 ◽

Cited By ~ 3

Author(s):

F. V. Kusmartsev

Keyword(s):

Magnetic Field ◽

Phase Transition ◽

Magnetic Properties ◽

Magnetic Phase Transition ◽

Josephson Junctions ◽

Magnetic Phase ◽

Kinetic Inductance ◽

Two Dimensional ◽

The One

We studied the magnetic properties of the ring of a Josephson junctions in a magnetic field at different capacitance of superconducting regions. We found that the capacitance which is the characteristic of the size of the superconducting region, does not change qualitatively the magnetic properties of the ring of junctions. At half-quantum of the flux through the ring there appears the magnetic phase transition which is characterised by the singularity in magnetization and in sucseptibility. At the transition there is the trapping of the one quantum of the flux by the ring. The interpretation of experiments, describing the inverse kinetic inductance as a function of a flux per plaquette of a lattice of two-dimensional arrays of the Josephson junctions is proposed. The new singularities in this dependency are predicted.

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Crystal field effect on the magnetic field dependence cooling exponent of 3D simple cubic spin-7/2 Ising model: A Monte Carlo study

Journal of Magnetism and Magnetic Materials ◽

10.1016/j.jmmm.2022.169024 ◽

2022 ◽

pp. 169024

Author(s):

Manotosh Chakravorty

Keyword(s):

Magnetic Field ◽

Monte Carlo ◽

Ising Model ◽

Field Dependence ◽

Field Effect ◽

Magnetic Field Dependence ◽

Monte Carlo Study ◽

Crystal Field Effect ◽

Simple Cubic ◽

The Magnetic Field

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Monte Carlo Modelling of Phase Transitions in Quasi-One-Dimensional Multiferoic

Materials Science Forum ◽

10.4028/www.scientific.net/msf.845.158 ◽

2016 ◽

Vol 845 ◽

pp. 158-161

Author(s):

S.J. Lamekhov ◽

Dmitry A. Kuzmin ◽

Igor V. Bychkov ◽

I.A. Maltsev ◽

V.G. Shavrov

Keyword(s):

Magnetic Field ◽

Phase Transition ◽

Monte Carlo ◽

Phase Transitions ◽

Monte Carlo Method ◽

External Magnetic Field ◽

Periodic Potential ◽

One Dimensional ◽

Field Modelling ◽

Energy Components

Behavior of quasi-one-dimensional multiferoic Ca3CoMnO6 in external magnetic field was investigated. Modelling by Monte Carlo method was performed to show influence of external magnetic field on appearance of polarization and temperature of phase transition in electric subsystem. Magnetization, polarization and energy components for magnetic and electric subsystems dependencies were achieved for different values of external magnetic field. Modelling showed that periodic potential in form of Frenkel-Kontorova makes influence on maximal values and temperature of phase transitions for magnetization and polarization.

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