Mestapha Arejdal

• PhD in Physics
• PhD in Physics at Mohammed V University

In this present research paper, our focus was on studying the nanomaterial model with the spin vector and its amplitude was 5/2: the magnetic, magnetocaloric effect and the critical exponents. By using Monte Carlo method, I succeeded in determining the fact that the magnetic transition nature was second-order with the Curie temperature of TC =14.46...

Using Monte Carlo simulations, we studied phase diagrams and magnetic properties of a ferromagnetic/antiferromagnetic Ising nanoparticles assembly with the spin-1/2 core and spin-3/2 shell. The system consists of nanocubes with equivalent exchange couplings of core and shell. However, the exchange couplings between the adjacent spins of the core an...

The Monte Carlo simulation method is used to investigate the magnetic and thermodynamic properties of a single Ising nanocube Fe/Co/Fe system containing three nano-layers described by spins (52/32/52\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{math...

In this present article, I primarily do research on the magnetic, magnetocaloric, and critical phenomena of the SrCoO3 perovskite. To study the aforesaid aspects of the system, I first start determining its transition temperature before establishing the second-order transition of the magnetic phase in the SrCoO3 perovskite by the positive slopes of...

We theoretically conducted a study on the magnetic behaviors and magneto-caloric performance of the YTiO3 compound, a studied system in this research paper. In accordance with the main objective if this paper, we restricted our research to only studying a number of the system-related elements such as the magnetization M(T), the inverse magnetizatio...

In this present paper, the electronic, magnetic and optical properties of the double Perovskites Ba2MUO6 with (M = Ni, Co, Cd and Zn) are investigated in the framework of the Generalized Gradient Approximation, employing the Full Potential-Linearized Augmented Plane Wave method as implemented in the Wien2K package. The only method used to study the...

Theoretically, the magnetic behaviours and the magneto-caloric performance of the Pb2CoUO6 double perovskite were predicted and examined. The results attained in this paper showed that the Pb2CoUO6 double perovskite was a ferromagnetic state under Tc ~ 10 K. The order magnetic transition of this system was a second-order from the ferromagnetic (FM)...

In this present paper, the electronic, magnetic and optical properties of the double Perovskites Ba 2 M UO 6 with ( M =Ni, Co, Cd and Zn) are investigated in the framework of the Generalized Gradient Approximation (GGA), employing the Full Potential-Linearized Augmented Plane Wave (FP-LAPW) method as implemented in the Wien2K package. The only meth...

The magnetic behaviors and the magneto-caloric effect in a nano-structure formed on a hexagonal Dendrimer structure with the moment spin (S = 7/2) were studied. This examination allowed me, in fact, to observe that the ferromagnetic order appeared above the transition temperature (Tc) whose value was 305 K. Along with this parameter and with the ai...

The study aims to investigate the optical and structural properties of ZnO wurtzite heterostructure thin films in order to manufacture them as a new generation of solar cell transparent electrodes. With the Sol gel- spin coating process, the pure and co-doped Zinc oxide with different amounts of aluminum and silicon were prepared. The composition w...

In the last half a century or so, Nanomaterials have received considerable attention thanks to their energy-efficient applications. Keeping this in mind and within the framework of my contribution to this scientific area, I firstly determined the magnetic properties and magneto-caloric performance in a Kekulene structure with the spin moment (S=2)...

We have systematically established and predicted the magnetic behavior and magnetocaloric effect in LaCr2Si2C. In the present work, we have employed the Monte Carlo methods in the framework of the (3D) Ising model. Ferromagnetic order of LaCr2Si2C is observed below the Curie temperature, which is 18.5 K. From the variation of the magnetism and Bind...

In this research paper, we determine and analyze the magnetic properties and the magneto-caloric effect in the compound MnBi. To do so, we firstly establish the magnetic properties of the studied compound by using Monte Carlo simulations method, and then we determine the transition temperature through studying the magnetization, the susceptibility,...

We discuss the fundamental transparent conducting properties of halogens doped SnO2 rutile systems include the structural, electronic structure, optical and electrical properties. Within this study, we employ the first-principles calculation of the full potential linearized augmented plane wave (FP-LAPW) method based on the density function theory...

This work presents a scientific interest and great importance in the industry. The aim of this thesis is the investigation and analysis of the functional materials in two different technological areas, Spintronics application and magnetic refrigeration. The magnetic properties and magnetocaloric effect are analyzed and discussed by the theoretical...

We aim in this research paper to investigate and determine the magnetic properties of the simple perovskite PbVO3 by determining all the stable phases and analyzing and discussing the ground phase diagrams as a first step. As the second one, we established the magnetic properties of the studied compound employing a Monte Carlo simulation method wit...

The aim of this study is to investigate and determine the magnetic properties and the magneto-caloric effect of the system MnAs with the spin moment (S = 2). To attain this aim, we first use Ab initio method to determine the density of the state and exchange couplings of the compound. This stage is followed by analysis and discussion of ground-phas...

This letter discusses the thermoelectric properties of Cu3PSe4 and Cu3PS4 compounds, using the Ab initio calculations. These compounds are predicted to be good thermoelectric materials thanks to the nature of their band edge states. Seebeck coefficient of Cu3PSe4 exhibits a maximum value of 1256 µV/K at roopm temperature, whereas it is 2389 µV/K fo...

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By means of first-Principe method within TB-mBJ approach and Boltzmann transport equations, the electronic structure, optical and electrical properties of zinc oxide doped with Iren are investigated. Both calculated band gap and lattice parameters of pure ZnO are found to be in reasonable agreement with the experimental measurements. Furthermore, t...

The electronic structure and semi-classic transport coefficients of SnO2 are investigated. The calculations are carried out by using the density functional theory and Boltzmann transport equations. The exchange-correlation potential is treated by the Tran–Blaha modified Becke–Johnson potential (Tb-mBJ) approximation. The calculated band gap value o...

The compound “Quadruple Perovskite Oxide CaCu3Fe2Re2O12”, composed of the mixed atoms with the magnetic moments Cu(σ = 1/2), Fe(S = 5/2) and Re(q = 1.0), is studied as the aim of this research paper, using Monte Carlo Simulations (MCS). The investigation of this system's magnetic proprieties is made through determining the ground state phase diagra...

The aim of this study is to determine and interpret the magnetic properties of a dendrimer nanoparticle system. In this model, we are inspired by a system with core-shell spins σ = 3 and S = 7/2 as the elements of this model. We first examine the ground-state phase diagrams, which are followed by the elaboration and discussion of the stable phases....

We perform the ab initio method, the Monte Carlo simulation (MCS) and the mean field approximation (MFA) to examine the magnetic proprieties of the double-perovskite Ba2CoUO6. The first method has been employed for investigating and analyzing the electronic density of state (DOS) in the framework of the generalized gradient approximation (GGA) usin...

Being motivated by Dendrimer model with mixed spins σ=3 and S=7/2, we investigated the magnetic nanoparticle system in this study. We analyzed and discussed the ground-state phase diagrams and the stable phases. Then, we elaborated and explained the magnetic properties of the system by using Monte Carlo Simulations (MCS) in the framework of the Isi...

Electronic and Optical properties of BiMO3 with M = Zinc, Vanadium, Manganese, Cobalt, and Fe were studied by first principles calculations using the density functional theory. We investigated optical reflectivity, optical absorption, band structure, and Total/Partial density of state using the full potential-linearized augmented plane wave method...

In this work, we investigate a nano-system built on a hexagonal dendrimer structure, for mixed spins σ = 2 and S = 3/2. First, we study this system in the presence/absence of both an external and crystal magnetic fields. The study of the effect of the coupling exchange interactions and the determination of the ground state phase diagrams are discus...