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First, this work examines the structural characteristics of the formation of a ZnSeTe solid solution. Further, after the introduction of Fe substitution impurity, electronic energy spectra and densities of electronic states were calculated. Significant changes in parameters of the electronic structure and magnetic properties caused by external hydrostatic pressure were revealed. It was found that the doped solid solution of ZnFeSeTe under normal conditions is a semiconductor for both spin orientations. However, under the action of hydrostatic pressure, this material turns into a metallic state, since the 3d states of iron are now at the Fermi level. Under the influence of pressure, the magnetic moment of the supercell decreases by more than six times, that is, from 4.0 to 0.67 Bohr magnetons. [ABSTRACT FROM AUTHOR]

The magnetic size effects of single-domain nickel nanoparticles encapsulated in a graphite-like carbon shell (Ni@C nanocomposites) have been studied. Along with ferro- and superparamagnetic characteristics, the samples exhibit paramagnetism due to surface nickel ions formed through charge transfer from the carbon matrix. A detailed analysis of the total curves of magnetization M(H) and coercivity at 10 K was carried out and the corresponding magnetic parameters were determined. [ABSTRACT FROM AUTHOR]

We are studied the electronic and magnetic properties of the A-site ordered perovskite CaCo3V4O12 within the density-functional theory using the generalized gradient approximation (GGA) with the consideration of strong Coulomb correlations (GGA + U) in the framework of the fully relativistic spinpolarized Dirac linear muffin-tin orbital method of band-structure calculation. The x-ray absorption spectra and x-ray magnetic circular dichroism at the Ca, Co, and V K-edges are investigated theoretically. The effect of the electric quadrupole E2 transitions and magnetic dipole M1 transitions are analysed. The calculated results are in good agreement with experimental data. [ABSTRACT FROM AUTHOR]

By employing the full-potential linearized augmented plane wave (FP-L/APW + lo) technique based on density functional theory (DFT), the structural, electronic and magnetic properties of zincblende W (1 − x) AgxGe alloys (x = 0 and 0.25) are scrutinized thoroughly. Based on the generalized gradient approximation (GGA), the exchange-correlation energy functional is included in the current simulation. For computing the structural features, the GGA approximation is applied, whereas GGA, GGA + U and the modified Burke–Johnson of GGA + U (TB-mBJ- GGA + U) approximations are incorporated to perform the calculations of electronic and magnetic behaviors of these alloys. The structural analysis of the alloys indicated that the total energy of the W 0. 7 5 Ag 0. 2 5 Ge alloy was favorable in the ferromagnetic ground state. The spin-polarized electronic structure shows the half-metallic behavior of the W 0. 7 5 Ag 0. 2 5 Ge alloy, while the WGe compound is identified as a metal. The magnetic results obtained from the half-metallic W 0. 7 5 Ag 0. 2 5 Ge alloy increasingly support the full half-metallicity of this compound because an integer value is acquired for the total magnetic moment. The strong hybridization between 4p-Ge and 3d-W states brings forth weak local magnetic moments at the nonmagnetic Ge atomic sites and reduces the local magnetic moment of the W atomic sites from its free space charge. [ABSTRACT FROM AUTHOR]

Copyright of Journal of the Chinese Society of Rare Earths is the property of Editorial Department of Journal of the Chinese Society of Rare Earths and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Harbin University of Science & Technology is the property of Journal of Harbin University of Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In this paper, we report the induced magnetization in metallic and semiconducting SiCNTs on the adsorption of transition metals. The resultant adsorbed SiCNTs structures showed half-metal-ferromagnetic and ferromagnetic behaviour verifying the induced magnetization. The spin-density of states and bandstructure have also been studied, confirming the induced magnetic behaviour. The strength of the induced ferromagnetic behaviour is varied with the various transition metals and is then related to the calculated magnetic moment in the adsorbed structure. The Cr adsorbed (8,0) SiCNT indicated strong half- metal-ferromagnetic behaviour with a magnetic moment of 5.4 μ B . Only Cu-adsorbed (6,0) metallic SiCNT showed ferromagnetic behaviour among all the simulated structures indicating the impact of transition metal on the SiCNT structures. These promising results will be helpful in designing of devices like spin-valves, MTJs, and MRAMs in the field of spintronics. [ABSTRACT FROM AUTHOR]

Using the Hypercentral Constituent Quark Model (hCQM), the mass spectra of doubly heavy baryons Ξ c b and Ξ b b are determined. The model describes an interaction inside the baryonic system. Screened potential has been considered as confining potential with color-Coulomb potential to enumerate the masses of baryonic states. Regge trajectories have been plotted in (J , M 2) plane. The properties like magnetic moment and radiative decay width have been determined using the obtained results. [ABSTRACT FROM AUTHOR]

Two separate computational algorithms have been used in the current investigation of Full-heusler compounds. One is the pseudo-potential approach used in the Atomistic Tool Kit-Virtual Nanolab, while the other is FP-LAPW method as implemented in WIEN2k. In the computational code, these compounds exhibit mattelic character in both the majority and minority spin channels. According to the WIEN2k and ATK-VNL codes, the computed magnetic moments of these compounds Co2CrZ (Z = As, B, Ga, and Pb) are 4.93 μB and 5.02 μB, 3.00 μB and 3.08 μB, 3.02 μB and 3.16 μB, and 4.07 μB and 4.30 μB, respectively. Between the estimated value and the Slater-Pauling rule, we discovered excellent agreement. These compounds' optical characteristics include reflectivity, refractive index, excitation coefficient, and absorption coefficient, among others. An analysis has been done on the electron energy loss and optical conductivity. Both the electron energy-loss function and the absorption coefficient increase as the energy value increases. As per the results of elastic properties, Co2CrZ compounds with Z = As, Pb are ductile by nature, whereas those with Z = B, Ga are brittle. Co2CrZ (Z = As, B, Ga, and Pb) compounds exhibit metallic behaviour when their Cauchy pressure (CP = C12 - C44) value is positive. [ABSTRACT FROM AUTHOR]

A subclass of ternary intermetallic known as Heusler compounds is being employed in the steel industry to increase material strength. This study examines the structural, electrical, optical, and magnetic properties of Co2VZ (Z=Al, Bi, Ge, Si) compounds using two different methods. First is full potential linearized augmented plane wave (FP-LAPW) method by WIEN2k and second is pseudo potential method by Atomic Tool Kit-Virtual Nano-Lab. The equivalent energy gaps in the minority-spin of Co2VZ (Z= Al, Bi, Ga, Ge) with WIEN2k code, which displays 100% spin polarization, are 0.703, 0.384, 0.186, and 0.67 eV near to the Fermi level. Furthermore, it is discovered that these compounds are absolutely half-metallic ferromagnetic (HMF). With the exception of Co2VBi, which exhibits metallic properties, the aforementioned compounds exhibit 0.525, 0.0, 0.553, and 0.786 eV band gaps in the ATK-VNL code and indicate 100% spin polarization. The magnetic moments of the compounds Co2VZ (Z= Al, Bi, Ga, Ge) are found to be 2.976, 4.003, 1.989, and 3.001 µB, respectively, in the WIEN2k code. The relative magnetic moments of the aforementioned compounds are also 1.991, 3.947, 1.999, and 2.997 µB, according to the ATK-VNL code. [ABSTRACT FROM AUTHOR]

In this work we analyze the statistical thermodynamic functions and magnetic moment of a Dice lattice subject to a normal quantizing magnetic field. Our analysis addresses the Grand Potential and Helmholtz Free Energy, as well as the magnetic moment, entropy and specific heat at constant volume, explicitly determining their magnetic field dependencies in the degenerate statistical regime, replete with de Haas-van Alphen oscillatory phenomenology (and other magnetic field dependence); and also determining their temperature dependencies jointly with magnetic field features in the approach to the zero temperature limit. Furthermore, we evaluate the Grand Potential exactly, for arbitrary temperature and density. Our results are obtained with consideration of the presence of heat and particle baths with fixed chemical potential and they are discussed in relation to other pertinent work on the subject.

Introduction. The article investigated one of the problems of creating exoskeletons — controlling the properties of magnetic rheological fluid in links of variable length with adjustable stiffness. Based on the research of domestic and foreign authors, the development and urgency of the topic was evaluated. The disadvantage of known exoskeleton models has been specified, i.e., the use of absolutely solid links, whose dynamics does not convey the dynamics of the human musculoskeletal system. The scientific research aimed at the formation of a new direction in the development of exoskeletons that accurately simulate the biomechanics of movements. Materials and Methods. Different states of structures of variable-length links with a magnetorheological fluid were studied. It has been noted that the links work on the principle of magnetic shock absorbers and consist of a piston rod, electromagnetic coils, and a housing filled with magnetorheological fluid. The ordering effect of an external magnetic field on the particles of a magnetorheological fluid was visualized and mathematically presented. The significance of such factors as time, charge density, magnetic field strength, as well as vectors of electric and magnetic induction, electric intensity and electric current density for this system was shown. The input parameter affecting the behavior of the magnetorheological fluid was determined. This was the magnetic field intensity. It was shown that the viscosity of the liquid varied depending on the shape of the magnetic particles (oblong or oblate ellipsoid). Results. The dependences that were fundamental for solving the task were investigated and visualized. The magnetic field strength and the angle between the vector directed along a straight line connecting the centers of two micron particles, and the vector of the external magnetic field strength were taken as the basic parameters. It was shown how the magnetic moment, voltage and its antisymmetric part depended on them. It was established that to control the properties of a magnetorheological fluid, it was required to change: – the external magnetic field intensity; – the angle between the external magnetic field intensity and the orientation vector between the dipoles. Two values of force were compared: one – for a given link design, and the other — fixed when walking in the lower leg of a person. The consistency of these indicators was established. Discussion and Conclusion. The scientific research results allowed us to present: – a method for controlling the properties of a magnetorheological fluid by an external magnetic field; – a variable-length link model with adjustable stiffness. The results obtained can be used in modeling multilink structures to create comfortable exoskeletons that interact synchronously with the human musculoskeletal system as a single human-machine system. The development is applicable to solving significant social and economic problems.

Based on the density functional theory (DFT) with allowance for spin polarization or the local spin density approximation (LSDA), we calculate the adsorption and diffusion properties of a lithium atom on a graphene () monolayer with monovacancy () as the anode material for an -ion battery. The DFT LSDA calculations are performed in relaxed 5 × 5 and 6 × 6 supercells and based on graphene with the monovacancy + lithium adatom complex . Based on the calculated values of the adsorption energy of the lithium atom , the energetically stable location of the lithium adatom is determined on a monolayer of supercells in and . The calculation results show that the adatom energetically prefers to be adsorbed in the pit position (H-site) rather than adsorbed from above (T-site) of the carbon atom in the monolayer. The DFT LSDA calculated electronic band structure and local total and partial magnetic moment of supercell atoms are consistent with the calculations performed by the generalized gradient approximation (GGA)-PBE functional for the H-, B-, and T-sites of graphene. Taking into account the experimentally obtained diffusion coefficients of lithium in two-layer graphene in the structural packing of an AB package and the temperature (263–333 K) dependence of Li diffusion in two-layer graphene, which is described by the Arrhenius law, the diffusion activation energy of is calculated at concentrations of = 0.06–0.51 in LixC12 graphene in the AB packaging. [ABSTRACT FROM AUTHOR]

This paper studies the quark condensate, magnetic moment, magnetic polarization, and magnetic susceptibility in a strong external magnetic field by employing the Dyson–Schwinger equations (DSE). The results show these physical quantities as functions of the magnetic field. We note that the quark's spin polarizations are approximately proportional to the magnetic field magnitude. For comparison, we investigate the magnetic moments and susceptibility of the nucleon in the constituent quark model framework and demonstrate that both these quantities increase as the magnetic field rises. [ABSTRACT FROM AUTHOR]

The reaction of thulium shavings with iodine at 680°C gave a poorly separable product mixture A, consisting of thulium metal (65%), TmI2 (14%), and TmI (21%). Monovalent thulium iodide could not be isolated in a pure state, but its presence among the products was confirmed, apart from magnetic measurements, by reactions with naphthalene and perylene, which proceed under mild conditions. The reaction of TmI with naphthalene, which takes place at –40°C, affords the trivalent thulium complex with naphthalene dianion, [TmI(C10H8)(DME)3]. The multistep reaction with perylene starts with the formation of the divalent thulium radical anion complex, [(TmI)+(C20H12)–•(DME)3], and ends in the formation of trivalent thulium complex, [(TmI)2+(C20H12)2–(DME)3]. The presence of a radical anion intermediate in the reaction mixture in an early stage was confirmed by ESR spectroscopy. [ABSTRACT FROM AUTHOR]

Using first-principles density functional theory calculations we investigate the effect of a nickel substitution on the structural, electronic, and magnetic properties of magnesium ferrite (x = 0, 0.4, and 1). The calculated lattice constant (8.38 Å) and magnetic moment (3.57 μB) of Fe atom are in reasonable agreement with the present experimental values from the present neutron scattering measurements. The presence of Ni is found to decrease the electronic band gap and eventually leads to a metallic character at x = 1. Moreover, based on the Maxwell–Boltzmann statistical analyses, we have predicted that phases can have mixed spin configurations in a real sample, which in turn determines the measured magnetic properties. [ABSTRACT FROM AUTHOR]

This work focuses on study of the structural, electronic, thermodynamic and thermoelectric properties of RbNbCd and RbNbZn Half Heusler (HH), utilizing a full-potential linearized augmented plane wave (FP-LAPW) approach and the Boltzmann transport equation using a constant relaxation time approximation within the context of density functional theory (DFT) as embedded in the WIEN2k code. The structural analysis employed the generalized gradient approximation (GGA) and considered the Birch Murnaghan equation of state (EOS), which results in the stable phase for RbNbCd and RbNbZn. The positive phonon spectra indicate the dynamical stability of the studied RbNbCd and RbNbZn. The compounds under investigation that have no bandgap are metallic, as evidenced by their electronic properties. Their mechanical and thermal stability as well as their anisotropic and ductile character are confirmed by the various elastic and thermodynamic parameters. The lattice thermal conductivity has been calculated. This thorough analysis demonstrates the applicability of the studied RbNbCd and RbNbZn for thermoelectric applications. [ABSTRACT FROM AUTHOR]

The two authors of the study approach the first steps of the impressive scientific career of acad. Ștefan Procopiu (1890-1972), and his fundamental discoveries, namely: determination of the molecular magnetic moment, the Procopiu phenomenon (longitudinal depolarization of colloidal and crystalline solutions), and the Procopiu effect (study of the Barkhausen effect and of magnetic discontinuity).

Triply heavy Occb baryon is considerable theoretical interest in a baryonic analogue of heavy quarkonium because of the color-singlet bound state of three heavy quark (c,b) combination inside. In this paper, we will discuss Occb baryon in the nonrelativistic quark model based on the ansatz approach in hypercentral constituent quark model. The masses of the ground and excited states of the Occb baryon are computed. The hypercentral potential is regarded as a combination of the color Coulomb plus linear confining term and the six-dimensional harmonic oscillator potential in this work. Also, we added the first order correction and the spin-dependent part to the hypercentral potential. The Regge trajectories has been plotted for this baryon and a detailed comparison with previous theoretical calculations is given. Further, using the computed spectroscopic data, the magnetic moments are determined for the ground state based on the nonrelativistic hypercentral constituent quark model. [ABSTRACT FROM AUTHOR]

Employing the state-of-the-art density functional theory with both generalized gradient approximation and the hybrid HSE06 functional, along with the incorporation of spin–orbit coupling, we have engineered stable room temperature ferromagnetism (FM) (RTF) in nonmagnetic LaH3 through C substitution at octahedral and tetrahedral H sites where the induced magnetic moment is mostly contributed by the 2 p orbital of the C atom. It is interesting that the magnetic signature is switched on with an impurity concentration as low as 1.04 at% with a magnetic moment of ∼1.0 µ B per impurity, where the localized behavior of the 2 p states of C, along with significant exchange splitting energy, can be attributed as the origin of the induced magnetic moment. The verification of the Stoner criterion in the material further confirmed the onset of FM in the system, and the computed Curie temperature is found to be well above room temperature. Reduced formation energy and the requirement of lower impurity concentration ensure practical feasibility towards a spintronic device where RTF is established from the nonmagnetic host and the dopant. [ABSTRACT FROM AUTHOR]

We have explored the interaction of Ni/Cr with pyridinic N-doped graphene and its influence on the electronic and magnetic characteristics of graphene using a density functional theory (DFT) approach. A 5 × 5 graphene supercell with a single vacancy is modeled. Initially, the concentration of nitrogen atoms is varied in the pyridinic configuration of graphene. The structures, thus obtained, are decorated with Ni/Cr atoms. For configurations without transition metals (TMs), the calculated electronic band structures show a downward shift in Fermi level that decreases as nitrogen concentration increases. Furthermore, it is found that these structures manifest metallic behavior along with some flat bands near the Fermi level. With the addition of Ni/Cr atoms, the movement of the Fermi level toward the conduction band is noticed. The opening of the bandgap at the K-point also varies slightly with the concentration of N atoms and/or the presence of TM atoms. The structures P1N-Ni and P2N-Ni transmute into semiconductors. A significant increase in the magnetic moment is found with the adsorption of the Ni/Cr atom. The analysis of spin-polarized partial density of states proves that higher magnetic moments following TM absorption are mainly on account of the Ni/Cr-3d orbitals and their hybridization with C-2p orbitals. These findings suggest that functionalizing TMs on pyridinic N (Nitrogen)-doped graphene can drastically alter their electronic and magnetic properties. [ABSTRACT FROM AUTHOR]

This paper reports on the synthesis of terbium sesquioxide (Tb2O3) nanoparticles via laser ablation of a solid target in a flowing 95% Ar + 5% H2 binary welding mixture with the use of an ytterbium-doped fiber laser with an average output power of 300 W. We have studied morphological and structural features of the synthesized powder, its thermal behavior, magnetic properties, and densification dynamics during heating to 1450°C in vacuum. The synthesized particles were nearly spherical in shape, with an average size of 13 nm, and had a monoclinic crystal structure, which irreversibly transformed into a cubic structure of symmetry as a result of firing in argon or vacuum at temperatures near 750 and 1050°C, respectively. Using temperature-dependent specific magnetization measurements, we determined their paramagnetic Curie temperature (θp = –11.8 K), Curie constant (C = 11.74 K emu/(mol Oe)), and effective magnetic moment (μeff = 9.69μB/Tb). These data suggest that antiferromagnetic exchange interaction between the terbium ions prevails and that the content of Tb4+ ions in the nanopowder is negligible. We have demonstrated the feasibility of producing transparent Tb2O3 ceramics by consolidating presintered nanoparticles via hot isostatic pressing for 2 h at a temperature of 1450°C and pressure of 200 MPa. [ABSTRACT FROM AUTHOR]

We perform a theoretical analysis of the fate of the local magnetic moment of a quantum dot coupled to a normal metallic lead and a topological superconducting wire hosting Majorana modes at the ends. By means of simple analytical tools and numerical renormalization group calculations, we show that the proximity of the Majorana mode reduces the magnetic moment from 1=4, characteristic of a free spin 1=2, to 1=16. Coupling to the normal lead then causes the Kondo effect, such that the magnetic moment is fully screened below the Kondo temperature. The latter is vastly increased for strong coupling to Majorana mode. [ABSTRACT FROM AUTHOR]

Understanding the factors influencing the surface properties and corrosion tendencies of iron is a step toward corrosion insights and prevention. The effect of sulfur impurities on the surface properties of Fe (100) has been investigated at monolayer (1 ML) concentration. The structural, electronic, optical and magnetic properties of the Fe (100) surface have been investigated using the spin polarized-density functional theory method. The results indicate that at 1 ML, sulfur migration and grain boundary formation on iron is most favored. However, iron absorption and deposition are both thermodynamically favored. S at the sub-surface causing pitting due to the preferred lower coordination of sulfur compared to iron at the subsurface sites. This phenomenon could explain the exposure of more bulk iron atoms and pit corrosion experienced as a result of the presence of sulfur in steel. Sulfur is seen to act as a corrosion promoter (an electronegative species) as it lowers the work function of Fe (100), making the surface more electropositive. S lowers the magnetic properties of iron, providing an antimagnetic spin to iron. The projected density of states plot shows the localization of electronic states below the Fermi level and the lowering of the conductivity of iron. The magnetic effect of iron is reduced in the presence of sulfur impurity as well as its corrosion resistance which is undesirable. Trapping S, however, at the bulk site under 4 coordination constraints, where sulfur is immobile could help reduce corrosion of the (100), the predominant face of iron crystals, as the work function of Fe (100) increases by 0.58 eV. [ABSTRACT FROM AUTHOR]

In this work, considering a simplified model we estimate the magnetic moment m associated to two neodymium magnets with different geometries. We investigated how the effect of temperature modifies magnetic properties, such as the intensity of the magnetic field evaluated at the extreme of these magnets, based on these results we present a fictitious anomaly as an didactic purpose inspired by the discussion built throughout the work, which allows illustrating a current problem in the scenario of high energy physics, known as the muon (g-2) anomaly. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Basrah Researches (Sciences) is the property of Republic of Iraq Ministry of Higher Education & Scientific Research (MOHESR) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Using the first-principles calculations, we investigate the electronic and magnetic properties of armchair silicon carbide nanoribbon (aSiCNR) with different combinations of edge dual-hydrogenation. The dual-hydrogenation on the boundary Si or C atom changes it from sp 2 hybridization to sp 3 hybridization, which will have an important role on the stability of aSiCNR. Only the full dual-hydrogenation on the one edge or two edges don't change the band structure and magnetic moment of aSiCNR. However, the other different combinations of edge dual-hydrogenation can result in aSiCNR exhibiting metallic, semiconductor, and half-metallic properties under non-magnetism state, ferromagnetic and anti-ferromagnetic states. These results may present a new avenue for band engineering of aSiCNR, as well as valuable suggestions for the practical application of SiC based nanomaterials in spintronics and multifunctional nanodevices. [ABSTRACT FROM AUTHOR]

While there have been reports on the magnetic properties of three- and five-element high-entropy oxide spinels containing Mn, Fe, Co, and Ni, along with other metals, four-element equiatomic cubic spinels based on these metals have not been reported. Therefore, Herein, we report the detailed microstructure and magnetic properties of a novel equiatomic (MnFeCoNi) 3 O 4 (MFCN) compound synthesized using a simple sol-gel auto-combustion method. The results were compared with that of (MnFeCo) 3 O 4 (MFC). Structural analyses confirmed the formations of pure spinel structure for both MFC and MFCN, with notable lattice parameters. Surface morphology analysis revealed a porous structure with a nearly uniform elemental distribution, which plays a vital role in physical properties. Magnetic characterization demonstrated saturation magnetization values of 66 to 41 emu/g for MFC and 58.5 to 36.3 emu/g for MFCN as the temperature increased from 2 to 370 K, with high coercivity values of 3200 Oe and 2500 Oe at 2 K, respectively. These magnetic properties are significantly higher than those observed in quaternary and five-component high-entropy oxides. Furthermore, 57Fe Mössbauer spectra revealed a combination of sextet and superparamagnetic doublet in both MFC and MFCN compounds with the predominant sextet. The intriguing microstructures and magnetic properties of these spinels indicate their potential for various applications. • A novel equiatomic porous (MnFeCoNi)₃O₄ (MFCN) cubic spinels successfully synthesized using a simple sol–gel auto-combustion method, filling a gap in the literature regarding four-element equiatomic cubic spinels. • The mixed valence states have a significant influence on magnetic properties. • We have achieved significant coercivity values of 3200 Oe for MFC and 2500 Oe for MFCN at 2 K, which decreased to 360 Oe and 409 Oe at 370 K, respectively, outperforming quaternary and five-component high-entropy oxides. • Magnetic characterization presented saturation magnetization values of 66 to 41 emu/g for MFC and 58.5 to 36.3 emu/g for MFCN, demonstrating robust magnetic properties. • Mössbauer analysis revealed a combination of sextet and superparamagnetic doublet with a predominance of the sextet, indicating distinct magnetic behavior. [ABSTRACT FROM AUTHOR]

In this study, the structural, electronic, magnetic, thermodynamic, and elastic attributes of ZMnAs (Z = Be, Mg) have been investigated. These Half-Heusler alloys exhibit stability in the ferromagnetic state (FM), as demonstrated by optimization-related energy release. The half-metallicity (HM) of these compounds is examined through the band structures and density of states (DOS). In addition, the crystal field and exchange energies are reported to confirm the control of electron spin. Additionally, the double exchange process and exchange constants were premeditated. In this case, ferromagnetism (FM) is caused by the quantum exchange of electrons, as evidenced by the negative pd exchange energy and the exchange constants, rather than being a result of clustering effects. The quasi-harmonic Debye model, included within the Gibbs code, was utilized to calculate the thermodynamic properties. These two compounds are mechanically stable and show ductile nature confirmed by the value of Poisson's ratio (v), Pugh's ratio (B/G), and Cauchy pressure (C P), which demonstrates the ability to withstand substantial plastic deformation before fracturing. Based on our calculations, the half-metallic (HM) nature, thermodynamic, ferromagnetic, ductile, and high inherent magnetic moment have been evaluated. These alloys are crucial in the advancement of spintronics and renewable energy systems. [ABSTRACT FROM AUTHOR]

[Display omitted] • There are discussions of magnetic performance of FM and AFM for all doping models. • Hybridization exist between Co-3 d and S-3 p, Mo-4 d and S-3 p of MoS 2 -Co and MoS 2 /Gr-Co. • The transition from half-metal to metal occurs after the introduction of graphene layer. • The O atom enhanced the magnetism of MoS 2 -2Co and MoS 2 /Gr-2Co systems. • The hybridization between Co-3 d and O-2 p is stronger than that between Co-3 d and S-3 p. The electronic structure and the magnetic properties are performed on Co doped MoS 2 (MoS 2 -Co) and Co doped MoS 2 /graphene (MoS 2 /Gr-Co) systems based on the first principles calculations. When two Mo atoms are substituted by two Co atoms, the magnetic moments of two Co co-doped MoS 2 (MoS 2 -2Co) and MoS 2 /Gr (MoS 2 /Gr-2Co) are 5.96 µ B and 6.40 µ B. The magnetic moment of MoS 2 -2Co increases by 0.44 µ B and the transition from half-metal to metal occurs after introducing the graphene layer. Further introducing an O atom in MoS 2 -2Co and MoS 2 /Gr-2Co, the hybridization between Co-3 d and O-2 p is significantly stronger than that between Co-3 d and S-3 p. [ABSTRACT FROM AUTHOR]

In this study, we discuss the magnetic moment of Pcs(4338) and Pcs(4459) hidden-charmed pentaquarks, which are closely related to their substructures. The magnetic moments of these states are calculated with the help of the QCD light-cone sum rules method with quantum numbers I(JP)=0(1/2−) and I(JP)=0(3/2−) for Pcs(4338) and Pcs(4459), respectively. Our predictions for the magnetic moment μPcs=0.34±0.12μN for the Pcs(4338) state, and μPcs=−1.67±0.58μN for the Pcs(4459) state. As a by-product, the magnetic moments of the isospin−1 partners of these states have also been obtained. The magnetic moments are obtained as μPcs=0.63±0.21μN and μPcs=−3.33±1.04μN for the isospin-1 partners of the Pcs(4338) and Pcs(4459) states, respectively. Our results regarding the magnetic moments of these color singlet-singlet type pentaquark states are compared with the results in the literature.