Magnetic Properties Study of the Nano-Alloy Fe1+xCo1−x by Monte-Carlo Simulations

Motivated by spintronic devices and their applications, we engineer a model to investigate the magnetic properties of the magnetic nano-alloy Fe[Formula: see text]Co[Formula: see text]. Where [Formula: see text] is the fraction of iron atoms Fe substituted by the cobalt Co atoms, [Formula: see text] corresponds to 50% Fe atoms and 50% Co atoms, this compound is then called equiatomic FeCo. The purpose of this work is to apply the Monte-Carlo Simulations (MCS), under Metropolis algorithm to predict the magnetic properties of such system. In a first step, we propose a model describing this system including different exchange coupling interactions. Then, we establish and analyze the ground state phase diagrams, in different planes. For non-null temperature values, applied MCS under the Metropolis algorithm. The behavior of both the magnetizations and the susceptibilities are illustrated as a function of temperature. Also the effect of the different exchange coupling interactions is studied and discussed. The hysteresis loops are presented and analyzed for specific values of temperature, exchange coupling interactions and concentrations.

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Magnetic properties of a tri-decorated graphene structure: Monte Carlo study

International Journal of Modern Physics B ◽

10.1142/s0217979216502337 ◽

2016 ◽

Vol 30 (32) ◽

pp. 1650233

Author(s):

A. Jabar ◽

N. Tahiri ◽

L. Bahmad ◽

A. Benyoussef

Keyword(s):

Monte Carlo ◽

Magnetic Properties ◽

Phase Diagrams ◽

Ground State ◽

Magnetic Hysteresis ◽

Hysteresis Loops ◽

Monte Carlo Study ◽

Magnetic Hysteresis Loops ◽

Reduced Temperature ◽

Good Agreement

In this paper, we study the magnetic properties of a tri-decorated [Formula: see text] graphene structure using Monte Carlo simulations (MCS). Indeed, we first elaborate the ground state phase diagrams and then, we found that from [Formula: see text] phases, the only stable configurations are: [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text]. For low reduced temperature values, the partial magnetizations are found to be in good agreement with the corresponding ground state phase diagrams. The corresponding partial susceptibilities show a notable peak around the reduced temperature value 2.0 in the absence of the external magnetic field [Formula: see text] and crystal field [Formula: see text]. To complete this study, we present and discuss the magnetic hysteresis loops.

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Ground state phase diagrams and magnetic properties of the double perovskite La2NiMnO6

Multidiscipline Modeling in Materials and Structures ◽

10.1108/mmms-02-2019-0042 ◽

2019 ◽

Vol 16 (2) ◽

pp. 281-292

Author(s):

Ibtissam El Housni ◽

Samira Idrissi ◽

Najlae El Mekkaoui ◽

Sara Mtougui ◽

Rajaa Khalladi ◽

...

Keyword(s):

Magnetic Properties ◽

Phase Diagrams ◽

Crystal Field ◽

Ground State ◽

Exchange Coupling ◽

Hysteresis Loops ◽

Magnetic Behavior ◽

Double Perovskite ◽

Physical Parameters ◽

Content Type

Purpose The purpose of this paper is to investigate the magnetic properties and the ground state phase diagrams of the double perovskite La2NiMnO6 using the Monte Carlo simulations (MCS). Design/methodology/approach In this work, the authors propose a Hamiltonian modeling this compound, described by an Ising model, with different exchange coupling interactions J11, J12 and J22 between the only magnetic atoms Ni and Mn. Findings Starting with the ground state phase diagrams, the authors present and discuss the stable configurations in different physical parameter planes. On the other hand, the authors present the investigation of the magnetic properties and the magnetization behaviors of the magnetic susceptibilities, as a function of temperature, crystal field, the exchange coupling interactions and the Zeeman energy. To complete this study, the authors illustrate the dependency of the total magnetizations for the hysteresis loops of the double perovskite La2NiMnO6 compound. This study is done for fixed values of temperature, the exchange coupling interactions and crystal field. Originality/value The authors modeled the different physical parameters of the double perovskite La2NiMnO with a Hamiltonian describing the system. At T=0K, the authors discussed the ground state phase diagrams of different physical parameters planes. For non-null temperature values, the authors studied the magnetic behavior of the double perovskite La2NiMnO using MCS under the metropolis algorithm. The authors expect that the results of these simulations can provide some important keys for the experimental research and technology applications of the double perovskite La2NiMnO6 in the future.

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Magnetic Properties of the Spins-5/2 and 3/2 Ising Octahedral Chain: A Monte Carlo Simulation

SPIN ◽

10.1142/s2010324718500170 ◽

2018 ◽

Vol 08 (04) ◽

pp. 1850017

Author(s):

A. Jabar ◽

R. Masrour

Keyword(s):

Monte Carlo Simulation ◽

Monte Carlo ◽

Magnetic Properties ◽

Monte Carlo Simulations ◽

Phase Diagrams ◽

Ground State ◽

Magnetic Hysteresis ◽

Magnetic Susceptibilities ◽

Crystal Fields ◽

Mixed Spins

Spins-5/2 and 3/2 Ising octahedral chain with regularly alternating monomeric and square plaquette sites is investigated using Monte Carlo simulations. The ground state phase diagrams of octahedral chain have been found for different blocks [Formula: see text] and for a several reduced crystal fields. The magnetization and magnetic susceptibilities of the mixed spins Ising octahedral chain have been obtained. The variation of reduced the transition temperatures with 1/[Formula: see text] has been determined. The magnetic hysteresis cycles of the mixed spins Ising octahedral chain for several blocks, [Formula: see text], for several reduced crystal fields and reduced exchanges interactions for a weak a zero crystal field have been investigated.

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Magnetic properties of Exchange-spring DyFe2/YFe2 Superlattices by Monte Carlo Simulations

MRS Proceedings ◽

10.1557/opl.2012.930 ◽

2012 ◽

Vol 1471 ◽

Author(s):

Pierre-Emmanuel Berche ◽

Saoussen Djedai ◽

Etienne Talbot

Keyword(s):

Monte Carlo ◽

Magnetic Properties ◽

Monte Carlo Simulations ◽

Field Dependence ◽

Hysteresis Loops ◽

Atomic Scale ◽

Exchange Spring ◽

Scale Modelling ◽

Different Temperatures

ABSTRACTMonte Carlo simulations are used to perform an atomic scale modelling of the magnetic properties of epitaxial exchange-coupled DyFe2/YFe2 superlattices. These samples, extremely well-researched experimentally, are constituted by a hard ferrimagnet DyFe2 and a soft ferrimagnet YFe2 antiferromagnetically coupled. Depending on the layers and on the temperature, the field dependence of the magnetization depth profile is complex. In this work, we reproduce by Monte Carlo simulations hysteresis loops for the net and compound-specific magnetizations at different temperatures, and assess the quality of the results by a direct comparison to experimental hysteresis loops.

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STUDY ON REGULAR DILUTIONS OF $S=\frac{1}{2}$ IMPURITY IN S=1 CHAINS BY QUANTUM MONTE CARLO SIMULATIONS

International Journal of Modern Physics B ◽

10.1142/s0217979203023483 ◽

2003 ◽

Vol 17 (31n32) ◽

pp. 5951-5959 ◽

Cited By ~ 1

Author(s):

HUAWEN WANG ◽

ZHAOXIN XU ◽

HEPING YING ◽

JUN ZHANG

Keyword(s):

Monte Carlo ◽

Magnetic Properties ◽

Monte Carlo Simulations ◽

Ground State ◽

Quantum Monte Carlo ◽

Cluster Algorithm ◽

Unit Cell ◽

Quantum Monte Carlo Simulations

We investigate the variant regularly diluted situations of [Formula: see text] in S=1 isotropic antiferromagnetic chains by the quantum Monte Carlo loop cluster algorithm. Our results manifest significant different magnetic properties in the ground state with respect to the odd (even) host S=1 spins in one unit cell with an impurity S=1/2, and the doped system gradually transits to the pure Haldane chain in two different tendencies with the decreasing of the impurity concentrations.

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