Synthesis of La-doped Mn0·6Zn0.4LaxFe2-xO4 and the study of its structural, electrical and magnetic properties for high frequency applications

Roni, Md. Mojahid; Hoque, Karimul; Paul, Tapash Chandra; Khan, M. N. I.; Hossain, Md. Emran

doi:10.1016/j.rinma.2021.100215

Cited by 17 publications

(8 citation statements)

References 56 publications

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“…This is because the density of Sm 3+ is 7.52 g cm −3 , which is less than that of Fe 3+ (7.86). Previous research has found a similar fluctuation in density with composition [23,25]. Figure 5 reveals that (d b ) values are significantly lower than (d x ) values.…”

Section: Structural Analysissupporting

confidence: 66%

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Sm-substituted Co-Mn nanoferrites: synthesis, characterization, magnetic properties and photocatalytic degradation of methylene blue

Abu-Elsaad,

Nawara

2023

Phys. Scr.

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An investigation has been performed into the influence of Sm3+ substitution on the structural, optical, and magnetic characteristics of Co0.5Mn0.5SmxFe2–xO4 (x = 0.0-0.1 and x changes at a step of 0.02) and its prospective use as an effective photocatalyst. The examination also explored the potential use of this composition as a proficient photocatalyst. The structural results verified the production of cubic spinel structures in all compositions. The determination of crystallite size has been done via the Williamson-Hall approach, taking into account the influence of strain variables. The ferrite nanoparticles’ spherical form was identified via transmission electron microscopy (TEM) examination. The Co0.5Mn0.5Fe2O4 sample exhibited a particle size distribution of around 40 nm. The optical band gap, ascertained using UV–vis-diffuse reflectance (DRS) spectra analysis, ranged from 1.38 to 1.43 eV. Vibrating sample magnetometer (VSM) analysis revealed that the produced sample was soft magnetic with moderate magnetization (58.18 emu g−1 - 42.73 emu g−1). Methylene Blue (MB) dye’s photocatalytic degradation (PCD) was used to study the photocatalytic behavior while exposed to sunlight. The Sm-doped Co-Mn nanoferrites synthesized in this study exhibit potential for use as effective active photocatalysts in the degradation of toxic industrial dyes. This application promises to enhance safety in both the environmental and healthcare sectors.

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Section: Structural Analysissupporting

confidence: 66%

“…Thus, the higher lattice strain compensated for spinel ferrite lattice structural aberrations [22]. Furthermore, the decrease in strain for Sm level (x = 0.10) implies a reduction in the concentration of lattice defects and the creation of high-quality samples [23]. It has been observed that t WH exceeds t Sch .…”

Section: Structural Analysismentioning

confidence: 99%

Sm-substituted Co-Mn nanoferrites: synthesis, characterization, magnetic properties and photocatalytic degradation of methylene blue

Abu-Elsaad,

Nawara

2023

Phys. Scr.

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Section: Characterization Of Mg033ni033co033laxfe2−xo4 Npsmentioning

confidence: 99%

“…The increase in Eg may result from intrinsic absorption and optical scattering at grain boundaries [29]. In addition, the increase in the bandgap energy accompanied by the decrease in the particle size upon increasing the La content is owed to the quantum size effect [29,30]. It is obvious that when a semiconductor gets exposed to light that has a wavelength equal to or higher than its bandgap energy, it absorbs the light.…”

Section: Characterization Of Mg033ni033co033laxfe2−xo4 Npsmentioning

confidence: 99%

Influence of Lanthanum Doping on the Photocatalytic and Antibacterial Capacities of Mg0.33Ni0.33Co0.33Fe2O4 Nanoparticles

et al. 2023

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The increase in environmental pollution, especially water pollution, has intensified the requirement for new strategies for the treatment of water sources. Furthermore, the improved properties of nano-ferrites permit their usage in wastewater treatment. In this regard, novel Mg0.33Ni0.33Co0.33LaxFe2−xO4 nanoparticles (NPs), where 0.00≤x≤0.08, were synthesized to test their photocatalytic, antibacterial and antibiofilm activities. The structural and optical properties of the prepared NPs were investigated by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), UV-Vis spectroscopy and photoluminescence (PL) analysis. As La content increases, the bandgap energy increases, whereas the particle size decreases. The photocatalytic activity of the prepared NPs is evaluated by the degradation of methylene blue (MB) dye under sunlight irradiation. Superior activity is exhibited by Mg0.33Ni0.33Co0.33La0.01Fe1.99O4 NPs. The influence of catalyst dosage, pH, temperature and addition of graphene (Gr) on the photodegradation reaction was studied. Increasing the pH and temperature improved the rate of the photodegradation reaction. The antibacterial and antibiofilm activities of the NPs were assessed against Escherichia coli, Leclercia adecarboxylata, Staphylococcus aureus and Enterococcus faecium. Mg0.33Ni0.33Co0.33Fe2O4 NPs inhibited bacterial growth. They had bacteriostatic activity on all isolates, with a greater effect on Gram-positive bacteria. All tested nano-ferrites had significant antibiofilm activities against some biofilms.

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“…The comprehensive-scan patterns (figure 1) for the diffraction angle between 15 • and 100 • , without severe peak broadening, confirm that monophasic pure ferrite compound have been prepared regardless of the composition. It can be concluded that the solubility limit effect did not show up for the selected content of the substituent [19]. In comparing the literature, it has been demonstrated that crystallinity increases, along with crystalline mass having the cubic spinel structure, with sintering at sufficient temperature for appropriate time duration [20].…”

Section: X-ray Diffractionmentioning

confidence: 97%

Ni/Zn ratio and La substitution effect on selected structural and magnetic properties of NiZn ferrites

Šoka,

Ušáková,

Dosoudil

et al. 2024

J. Phys.: Condens. Matter

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Auto-combustion process was used for synthetization of Ni1-xZnxFe2O4 and Ni1-xZnxLa0.02Fe1.98O4 (x = 0, 0.3, 0.5, 0.64 and 0.7) ferrite samples to investigate their structural and selected magnetic properties. Standard characterization method such as X-ray diffraction, magnetic susceptibility temperature dependencies measurement, low-frequency hysteresis loops recording and complex permeability spectra were used on the research samples. The monophasic ferrite compounds have been prepared. For all samples, with an increase in the content of zinc ions, a decrease in the value of the Curie temperature and coercive field and an increase in the value of the real part of the complex permeability were observed, together with a shift in the value of the ferrimagnetic resonance frequency to lower values. Substituted samples showed some differences, such as slightly higher values of the Curie temperature and coercive field, and at the same time slightly lower values of the real part of the complex permeability and higher values of the ferrimagnetic resonance frequency.

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Synthesis of La-doped Mn0·6Zn0.4LaxFe2-xO4 and the study of its structural, electrical and magnetic properties for high frequency applications

Cited by 17 publications

References 56 publications

Sm-substituted Co-Mn nanoferrites: synthesis, characterization, magnetic properties and photocatalytic degradation of methylene blue

Sm-substituted Co-Mn nanoferrites: synthesis, characterization, magnetic properties and photocatalytic degradation of methylene blue

Influence of Lanthanum Doping on the Photocatalytic and Antibacterial Capacities of Mg0.33Ni0.33Co0.33Fe2O4 Nanoparticles

Ni/Zn ratio and La substitution effect on selected structural and magnetic properties of NiZn ferrites

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