Magnetic Properties Research Articles

SARAh - web representational analysis.

The online software server SARAh-webRepresentational Analysis is introduced. It replaces the previous Windows-versions of SARAh-Representational analysis and SARAh-Refine, and related theory. The new suite of web apps carries out a range representational analysis calculations, including those based on the works of Kovalev, Bertaut, Izyumov, Bradley, Cracknell, Birman and Landau, for magnetic structures and electronic properties within frameworks based on the crystallographic space groups and point groups. Irreducible representations are sourced from the works of Kovalev, tabulated and computations are carried out on a server using Mathematica.

A first-principles study of structural, electronic, magnetic, and mechanical properties in CeGaO₃

A first-principles study of structural, electronic, magnetic, and mechanical properties in CeGaO₃

Study of magnetism and electrocatalytic properties in perovskite DyCrO3

Study of magnetism and electrocatalytic properties in perovskite DyCrO3

Influence of high pressure on structural, electronic, magnetic, optical, mechanical and thermoelectric properties of rare-earth nitrides RE3+N3− (RE3+ = Sm3+, Eu3+, Gd3+)

Influence of high pressure on structural, electronic, magnetic, optical, mechanical and thermoelectric properties of rare-earth nitrides RE3+N3− (RE3+ = Sm3+, Eu3+, Gd3+)

Scrutinizing the electronic structure, magnetic, mechanical, thermodynamic, optical and thermoelectric properties of lead-free hafnium based Hf2VP (P = Si, Sn) full Heusler alloys

The study of energy harvesting and thermoelectric materials has drawn more attention in the last several years. The great thermal stability of these materials is advantageous for thermoelectric devices, in addition to their structural capacity for showcasing and incorporating diverse novel concepts to augment the thermoelectric figure of merit. In the current study, we have predicted the physical properties of Hf2VP (P = Si, Sn) Heuslers using density functional theory in conjunction with the Boltzmann transport scheme. The strength and ductility of these materials are ascertained by simulating elastic characteristics The exchange correlation potential is handled via the modified Becke–Johnson potential (mBJ) and the generalized gradient approximation of Perdew, Burke, and Ernzerhof (GGA-PBE). Near the Fermi level, the band profiles for Hf2VSi and Hf2VSn Heuslers were found to be n-type indirect band-gap respectively. The thermodynamic stability of these materials is approved by the formation and cohesive energy. The relationships between different transport parameters are predicted using the band occupation and density of states in the post DFT treatment. Slack’s equation has identified the most significant lattice component of heat conductivity with great precision. These materials are likely to find use in the design of memory devices and future thermoelectric and energy harvesting materials due to their half-metallic nature and efficient thermoelectric parameters, such as electrical conductivity, Seebeck coefficient, thermal conductivity, power factor, and ZT.

Investigations of Mechanical, Magnetic and Thermoelectric Properties of Double Perovskites Na2IrX6 (X=Cl, Br) for Spintronic and Energy Harvesting Applications

Investigations of Mechanical, Magnetic and Thermoelectric Properties of Double Perovskites Na2IrX6 (X=Cl, Br) for Spintronic and Energy Harvesting Applications

Effect of Yttrium on structural, optical, morphological, magnetic and photocatalytic properties of CuO nanostructures

Effect of Yttrium on structural, optical, morphological, magnetic and photocatalytic properties of CuO nanostructures

Impact of annealing on ZnFe₂O₄: Structural, optical, magnetic, photocatalytic, and antibacterial properties with DFT insights into optical parameters

Impact of annealing on ZnFe₂O₄: Structural, optical, magnetic, photocatalytic, and antibacterial properties with DFT insights into optical parameters

DFT+U and QTAIM insights into magnetic and optoelectronic properties, and bonding analyses of Europium-Hexafluorozirconate (EuZrF6)

DFT+U and QTAIM insights into magnetic and optoelectronic properties, and bonding analyses of Europium-Hexafluorozirconate (EuZrF6)

Application of a Superior Magnetic Hydroxy Iron Material for Arsenic Removal from Soil.

Magnetic removal technology enable rapid removing arsenic from soil. However, the high cost of magnetic arsenic removal materials folimited its application. A magnetic arsenic removal material which is much less costy was introduced in this study. CTAB@β-FeOOH@Fe3O4 (C-M-MFe), a composite modified montmorillonite, was synthesized and investigated for its adsorption performance, mechanism, and remediation efficacy in arsenic-contaminated soil. The results indicate that the maximum theoretical adsorption capacities of the material for As(Ⅴ) and As(Ⅲ) are 74.90 mg·g-1 and 67.81 mg·g-1, respectively. The adsorption mechanism involves electrostatic attraction, inner-sphere complexation, and precipitation. Moreover, our findings suggest that the potential synergistic oxidation of As(Ⅲ) facilitated by Fe(Ⅲ) in β-FeOOH and structural Fe(Ⅱ) in magnetite, may contribute to adsorption efficiency. Under the conditions of 1:1 (g:g) of soil slurry solid-liquid ratio, 1% of adsorbent dosage, and more than 12 hours of treatment duration, C-M-MFe could strongly reduce 92.14% of available arsenic and also 44.09% of specifically adsorbed arsenic in the soil. Finally, the total arsenic removal rate reached 10.83%, with an adsorbent recovery rate of 92.44%. Compared with other magnetic arsenic removal materials, the C-M-MFe developed in this study is an efficient adsorbent of arsenic with low cost. Plus that we found that As(Ⅲ) might be oxidized by β-FeOOH in adsorption process, which contribute to solve the tough problem of As(Ⅲ) removal. The results of this paper offered a promising potential method for arsenic removal from contaminated soils. Environmental implications This research developed a cost-effective adsorbent for arsenic removal, which possesses both magnetic and catalytic oxidation properties. Our study elucidated the primary adsorption mechanism and evaluated its application effectiveness in contaminated soil. By leveraging the adsorption and catalytic oxidation capabilities of β-FeOOH, we achieved an enhancement in the removal of As(III). This approach offers a promising strategy to improve As(III) removal efficiency while minimizing the required adsorbent dosage, thus holding potential for practical applications in remediating arsenic-contaminated soils.

Study on magnetic and mechanical properties of regenerated Nd-Fe-B sintered magnets via an ultra-short process

Study on magnetic and mechanical properties of regenerated Nd-Fe-B sintered magnets via an ultra-short process

Magneto-mechanical effects in a flexible magnetic system studied through combined MOKE magnetometry and mechanical testing.

We explore the magnetic properties of a thin Co film deposited on Kapton® substrates using the magneto-optical Kerr effect in a longitudinal configuration. We developed a magnetometer integrated with a tensile testing machine to investigate magnetization reversal phenomena under applied strain. The tensile machine, custom-designed to fit the experimental constraints, applies uniaxial stress to the samples, facilitating the study of magnetoelastic effects. Calibration using digital image correlation ensures accurate strain measurements. Our findings demonstrate that the application of strain significantly influences the magnetization curves, highlighting the emergence of anisotropies and changes in coercive and saturation fields.

Improvement of soft magnetic properties for Fe-based amorphous/nanocrystalline alloy by longitudinal magnetic field annealing

Improvement of soft magnetic properties for Fe-based amorphous/nanocrystalline alloy by longitudinal magnetic field annealing

Effects of film thickness on the superconductivity of LaSi2(00l)/Si(100) films

In this paper, we studied the superconducting properties of the LaSi2(00l)/Si(100) single-crystalline thin films prepared by the molecular beam epitaxy (MBE) method with different thicknesses via electro-transport and magnetic properties measurements. The S50 (sample with deposition thickness around 50 nm) exhibits the highest superconducting transition temperature (Tc) of 2.62 K, which is higher than that of the bulk LaSi2. The variation of Tc with film thickness is within 8%. In addition, the upper critical field (Hc2) increases with reducing film thickness. Especially for the thinnest LaSi2 film with deposition thickness around 10 nm, the Hc2 shows a sharp increase and the flux jump activity disappears, which is due to the defects and disorders from the interfacial effect. Our work completes the superconducting properties of LaSi2 films, which helps to understand the influence and modulation of film thickness on superconductivity in LaSi2 system.

Structural, dielectric and magnetic properties of multi-walled carbon nanotubes decorated BiFeO3 nanocomposites for technological applications

Structural, dielectric and magnetic properties of multi-walled carbon nanotubes decorated BiFeO3 nanocomposites for technological applications

Modular Assembly, fluorescent and magnetic properties of a series of non-symmetric binuclear lanthanide complexes

Modular Assembly, fluorescent and magnetic properties of a series of non-symmetric binuclear lanthanide complexes

Magnetically recyclable CoFe2O4 nanocatalysts for efficient glycolysis of polyethylene terephthalate

Efficient and sustainable recycling of polyethylene terephthalate (PET) is essential in mitigating its environmental impacts on climate, human health, and global ecosystems. Glycolysis, a closed-loop recycling method that converts PET into bis(2-hydroxyethyl) terephthalate (BHET), stands out as one of the most promising methods due to its mild operating conditions and environmentally friendly nature. However, the complete convert PET into BHET with a high stability are still challenging. In this study, magnetically recyclable CoFe2O4 nanocatalysts were synthesized by the solvothermal method and surface-modulated with Na3Cit·2H2O as a modifier. When utilizing an optimized CoFe2O4 catalyst, conversion of PET achieved 100 %, with a BHET yield of 91.7 % at 210 °C for 1 h. The excellent catalytic performance of CoFe2O4 is attributed to its smaller particle size, improved dispersion, higher surface Co/Fe ratio, and increased oxygen vacancies, all of which can be achieved through straightforward surface modulation. DFT calculations of M−O distance (M = Co or Fe), adsorption energy, and Bader charges confirm that a higher surface Co/Fe ratio enhanced PET glycolysis, consistent with experimental results. Additionally, a modified energy economy coefficient (εm) was proposed to characterize the catalytic efficiency. The εm value of CoFe2O4-60 % was 0.624, indicating promising applications in efficient PET glycolysis. This work presents a versatile approach for easily manipulating the surface properties of magnetic catalysts and identifies key factors for achieving high performance in PET-to-BHET conversion. It offers valuable guidelines for the future design of nanoparticle catalysts with magnetic properties for chemocatalytic reactions.

Strain-modulation on electronic structures and magnetic properties of Fe doped monolayer 2H-MoS2: the first-principles calculation study

Strain-modulation on electronic structures and magnetic properties of Fe doped monolayer 2H-MoS2: the first-principles calculation study

Implication of chemical ordering on the contrasting magnetic properties of Heusler alloys Pd2TbSn and Pd2HoSn

Implication of chemical ordering on the contrasting magnetic properties of Heusler alloys Pd2TbSn and Pd2HoSn

Structural, optical, chromaticity, and magnetic properties of uncapped and reduced graphene oxide (rGO) capped-β-Ni(OH)2 nanostructures for spintronic devices, and LED applications

Structural, optical, chromaticity, and magnetic properties of uncapped and reduced graphene oxide (rGO) capped-β-Ni(OH)2 nanostructures for spintronic devices, and LED applications