Comparative Study of Rare Earth Nd and Sm Doping on the Structural, Morphological, Optical, Magnetic, and Electromagnetic Traits of Mg-Zn-Cu Spinel Nanoferrites

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The sol-gel auto-combustion (SC) procedure was utilised to fabricate lanthanum-doped Mg-Zn nanostructures with the chemical composition, Mg0.6Zn0.4LaxFe2-xO4, (x = 0, 0.05, 0.10). X-ray diffraction showed nanocrystalline and single-phase of Mg-Zn nanostructures. The morphological traits showed formation of irregular and aggregated grains. Fourier transform infrared spectroscopy detected the formation of two characteristic band positions that fall within the range of 400 to 600 cm−1 and may occur because of stretching vibration within metal-oxygen (M-O) cations located at interstitial positions. From the M-H loops, the excellent values of magnetic factors, such as the saturation magnetization (Ms), rentivity (Mr), and coercivity (Hc) ranging from 35.30 to 44.79 emu g−1, 1.40 to 3.75 emu g−1, and 11.56 to 41.42 Oe were obtained. The loss tangent (tan δ) was observed to be miniscule for all of the samples due to which they can be useful for electronic applications. However, the initial values of the real permeability ( μ ′ ) was high and it decreases until 4 GHz, after which it acquires a constant value for rest of frequency range. However, observed low values of the magnetic loss tangent (tan δ μ ) were due to the large grain size and the high densification of the samples.

Section: Introductionmentioning

confidence: 99%

Lanthanum Substituted Mg-Zn Ferrite Nanostructures: A Comprehensive Study of Cation Distribution, Structural, Morphological, Optical, Magnetic, Dielectric, and Electromagnetic Traits

Jasrotia,

Sharma,

Ahmed

et al. 2024

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“…Moon et al 12 worked on the epoxy adhesive with rGO reinforcement and have shown that the mechanical properties of NC increased by using rGO. Wejrzanowski et al 13,14 have shown enhanced results of experimental work & numerical simulation where copper is reinforced with multi-layered Gr to enhance the thermal conductivity of NC. Peng et al have improved solder efficiency by adding Gr into Sn-Bi NC.…”

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confidence: 99%

Review—Computational Studies of Graphene Reinforced Nanocomposites: Techniques, Parameters, and Future Perspectives

Dahiya,

Khanna,

Gupta

2024

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In recent years, there has been notable exploration and investigation of graphene nanocomposites (GNCs) through experimental, numerical, and computational methods. GNCs have gained attention due to their remarkable mechanical and thermal properties, particularly when Gr has been utilized as the reinforcing material. Gr, a two-dimensional material, possesses exceptional properties, including greater elastic modulus, thermal conductivity, and electrical conductivity. As a result, GNCs have emerged as promising materials for various applications in aerospace and automobiles. Computational techniques, including finite element method (FEM), molecular dynamics, and Monte Carlo analysis have been utilized to analyse different aspects of GNC. Among these, FEM stands out for designing and evaluating the mechanical properties of GNC, enabling researchers to simulate and analyse the characteristics of GNC structures under diverse loading conditions, optimizing their design and predicting mechanical performance. This review emphasizes the significance of Gr in various matrices, discusses the present cutting-edge status of FEM methodologies for Gr reinforcement, and highlights its advantages and purposes. Furthermore, it explores the governing parameters affecting the mechanical properties of GNC and briefly presents the different mechanical properties of NC. We also outline future research directions and potential applications of GNC for advancing future generations of materials.

“…1 The magnetic materials have shown their importance in different areas of technologies including, magnetic recording media, gas sensors, wastewater treatment, inductors, switching circuits, stealth technologies, biomedical etc. [2][3][4][5][6][7] Spinel ferrite has risen above the other types of ferrites in terms of applicability in many technologies. The most important application of spinel ferrite which might have a very huge impact on our society is the wastewater treatment through photocatalysis.…”

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confidence: 99%

A New Class of Multifunctional CoDy_zFe_2−zO₄ Magnetic Nanomaterials: Influence of Structural, Morphological, Optical, Magnetic, Antibacterial, and Photocatalytic Traits

Kumar,

Jasrotia,

Puri

et al. 2024

Here we focus on preparing recoverable Dy doped CoFe2O4 photocatalysts for the removal of the malachite green pollutant (MGP) in natural sunlight. XRD results demonstrate development of the spinel symmetry with no impurities phases. The FESEM analysis revealed spherical grains with clear grain boundaries and agglomerated behaviors. We found that our synthesized photocatalysts behaves as an excellent magnetic nanomaterial by observing the saturation magnetization of 77.79 emu/g. Out of all photocatalysts, CoDy0.03Fe1.97O4 nanophotocatalyst exhibit the high zone of inhibition (ZOI) for Staphylococcus aureus and Escherichia coli. It makes the prepared nanomaterials highly suitable for the biological purposes. The effectiveness of photocatalytic degradation activity of prepared specimens is significantly impacted by the addition of dysprosium ions. During a 150 minutes of reaction period, CoDy0.06Fe1.94O4 has a higher degradation percentage around 95.36% as compared to CoFe2O4 (86.09%). The prepared doped and undoped CoFe2O4 nanomaterials displayed the least decline in the degradation percentage of MGP after four reuse cycles and this might be attributable to the weight loss during the recovery. Therefore, the nanomaterials suggested a reliable and durable photocatalyst for degradation process. Hence the prepared magnetically recoverable and multifunctional photocatalysts are reliable for the water remediation and biological usages.