Y3+ composition and particle size influenced magnetic and dielectric properties of nanocrystalline Ni0.5Cu0.5YxFe2-xO4 ferrites

Shitole, J.B.; Keshatti, S.N.; Rathod, Sopan M.; Jadhav, Santosh S.

doi:10.1016/j.ceramint.2021.03.114

Cited by 27 publications

(7 citation statements)

References 61 publications

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“…T 2g (3) represents the anti-symmetric, and E g indicates the symmetric bending modes of oxygen concerning Fe (M), respectively. T 2g (1), the fifth mode of Raman spectroscopy, represents the translational development of MO 4 (tetrahedron) [96]. With the substitution of Sm 3+ ions, these five Raman modes demonstrated the spinel structure with identical space gathering of samples.…”

Section: Raman Spectroscopymentioning

confidence: 99%

“…The following study and discussion focused on the various structural parameters and the effect of Sm 3+ substitution. Equation (1) shows how the standard relationship, which applies Bragg's rule [42], was used to calculate the lattice constant (a).…”

Section: X-ray Powder Diffraction (Xrd)mentioning

confidence: 99%

“…Spinel ferrites (magnetic nanocomposite metal oxides) are a class of magnetic materials acquiring more importance due to their various technological applications, such as in the development of transformers, electrical devices, microwave devices, sensors, and high-density information storage media [1][2][3]. Among spinel ferrites, MgFe 2 O 4 (soft magnetic and normal spinel type) [4], NiFe 2 O 4 (soft magnetic and inverse spinel type) [5], and…”

Section: Introductionmentioning

confidence: 99%

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Structural, Magnetic, and Mössbauer Investigation of Mg-Ni-Co ferrites doped by Sm³⁺ sions

Matar,

Rabaa,

Moussa

et al. 2023

Phys. Scr.

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Samarium-doped magnesium-nickel-cobalt nanoferrites (Mg1/3 Ni1/3Co1/3)Fe2-xSmxO4, with x = 0.00, 0.01, 0.02, 0.04, and 0.08, were synthesized by the coprecipitation method. X-ray diffractometer (XRD), transmission electron microscopy (TEM), energy dispersive X-ray (EDX), X-ray photoelectric spectroscopy (XPS), Fourier Transform Infra-Red (FTIR), Raman spectroscopy, Mössbauer spectroscopy, and magnetic measurement techniques were used, to study the structure, microstructure, and magnetic properties of the samples. The formation of the cubic spinel structure was confirmed by Rietveld analysis of the XRD data and by the appearance of the two absorption bands close to 400 cm-1 and 600 cm-1 from the FTIR spectrum. Raman spectroscopy verified the formation of the spinel phase in the samples. The elemental composition, valency, and cationic distribution were examined using X-ray photoelectric spectroscopy (XPS) measurements. Experimental findings revealed that doping with Sm3+ ions had a significant effect on the magnetic properties of nanoparticles. The saturation magnetization (Ms) and coercivity field (Hc) values fluctuate depending on the crystallite size (DXRD) of the samples from XRD analysis as the Sm3+ content increases. The magnetization dependence on the applied field was investigated at different ranges of applied fields based on the output of the statistical parameters for the curve fitted using four different forms of the law of approach to saturation. The statistical parameters and physically significant fitted parameters give information on the dependence of magnetization over various applied field regions. A thorough investigation of the output parameters from fitting into various equations reveals that the composition of Mg-Ni-Co ferrites exhibits a dependence of magnetization on the applied field. Room-temperature Mössbauer spectra displayed a mix of the magnetic sextet and central quadrupole doublet, with improvement in the magnetic sextet in the Sm-doped samples. Moreover, Mössbauer spectra at 77 K showed the demise of the quadrupole doublet in all samples and showed two sextets (tetrahedral and octahedral sites). Sm-doping reduced the values of the hyperfine magnetic field of both sextets. All Fe ions can be found in the Fe3+ state, according to the isomer shift values and there is a migration of Fe3+ ions from octahedral to tetrahedral sites upon Sm doping, which was confirmed by XPS measurements.

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Section: Raman Spectroscopymentioning

confidence: 99%

Section: X-ray Powder Diffraction (Xrd)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structural, Magnetic, and Mössbauer Investigation of Mg-Ni-Co ferrites doped by Sm³⁺ sions

Matar,

Rabaa,

Moussa

et al. 2023

Phys. Scr.

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“…The STEM micrographs of some chosen CMLF nanoferrite samples (as representative samples), CMLF0, CMLF3, and CMLF5 are exhibited in figures 3(a)-(c). After carefully checking our photos, the micrographs have sharp edges demonstrating the cube-shaped particles of the synthesized nanoparticles [33].…”

Section: Stem-eds Analysismentioning

confidence: 99%

Eco-friendly Co-Mg-La nanoferrites for an efficient MB removal for wastewater treatment applications

2023

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Improving effective and thrifty photocatalysts was deemed an outstanding approach for pollution handling. Here, a novel magnetic Co0.5Mg0.5LaxFe2-xO4 nanoparticle photocatalysts were synthesized via a combustion approach for the harmful methylene blue (MB) dye degradation. These samples were labeled as Co0.5Mg0.5Fe2O4 (CMLF0), Co0.5Mg0.5La0.03Fe1.97O4 (CMLF1), Co0.5Mg0.5La0.06Fe1.94O4 (CMLF2), Co0.5Mg0.5La0.09Fe1.91O4 (CMLF3), Co0.5Mg0.5La0.12Fe1.88O4 (CMLF4), and Co0.5Mg0.5La0.15Fe1.85O4 (CMLF5). A sequence of characterizations, including XRD, STEM, and UV–Vis-DRS, was exploited to examine the structure, morphology, constituent elements, and optical features of the CMLF ferrite nanoparticles. Despite the substitution process, an amazing decrement result for the lattice parameter (8.3748 to 8.3610 Å) and crystallite size (21.87 to 13.95 nm) is a large La cation at the expense of a smaller Fe one. The band-gap behavior of the CMLF nanoferrites is unique; it increases from 1.528 eV at the CMLF0 to 1.547 eV at the CMLF3 and decreases to 1.526 eV at the CMLF4 and 1.520 eV at the CMLF5. Two justifications accounted for this behavior. The nanoferrite CMLF5 has the highest photodegradation efficiency, 96.09 %, after 60 minutes. Three hypotheses were introduced to explain this result. After five cycles, the degradation efficiency of the nanoferrite CMLF5 maintained its high performance with 95.09 %, 94.87 %, 94.76 %, 93.59 %, and 93.44 %, respectively. These outcomes validate the outstanding photocatalytic efficiency, recyclability, and stability of the CMLF5 photocatalyst in its task to degrade the harmful MB dye, making it acceptable for wastewater treatment applications.

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“…It is also important to note that as the concentration of nanoparticles increases, the surface area decreases. Additionally, using the following equations, the distances between magnetic ions and hopping distances in tetrahedral sites (LA) and octahedral sites (LB) were calculated [19,20,21].…”

Section: Relative Porosity and Specific Surface Areamentioning

confidence: 99%

Fabrication and Study of the Effect of Mn-Substituted Ba-Zn Nanoferrites on the Enrichment of Structural Properties

Othman

Al-Hammadi

Khoreem

2023

jast

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In this study, we investigated the effect of Mn doping on the structural properties of barium-zinc ferrites (BZF-NPs) synthesized using the traditional ceramic method. X-ray diffraction (XRD) was used to analyze the structural characteristics of the BZF-NPs, including the structural phases, crystallite size, and lattice parameters. In addition, various physical properties, such as bulk density, X-ray density, porosity, and specific surface area, were investigated. The XRD analysis of the samples revealed that the lattice parameters of the hexagonal M-type structure of the BZF-NPs decreased as the concentration of Mn+2 ions increased. In addition, the average crystallite size of the samples decreased from 52 to 42 nm with increasing Mn+2 concentration. The c/a parameter ratio indicates the formation of a magneto-plumbite structure. Moreover, we found that both the X-ray and bulk densities increased with increasing Mn+2 concentration. This behavior can be attributed to the difference in ionic radii between the donor Mn+2 ions and the host Fe+3 and Zn+2 ions. However, it was observed that the porosity increased with increasing Mn+2 concentration, in contrast to the bulk density behavior. Furthermore, it was observed that as the crystallite size increased, the surface area decreased. This trend can be attributed to the fact that larger crystallites have fewer surface atoms. Finally, it was noted that the bond lengths for both tetrahedral and octahedral structures decreased with increasing Mn2+ ion concentration. Overall, these results provide insights into the impact of Mn+2 ion doping on the structural and physical properties of BZF-NPs and highlight the potential applications of these materials in various fields.

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Y3+ composition and particle size influenced magnetic and dielectric properties of nanocrystalline Ni0.5Cu0.5YxFe2-xO4 ferrites

Cited by 27 publications

References 61 publications

Structural, Magnetic, and Mössbauer Investigation of Mg-Ni-Co ferrites doped by Sm³⁺ sions

Structural, Magnetic, and Mössbauer Investigation of Mg-Ni-Co ferrites doped by Sm³⁺ sions

Eco-friendly Co-Mg-La nanoferrites for an efficient MB removal for wastewater treatment applications

Fabrication and Study of the Effect of Mn-Substituted Ba-Zn Nanoferrites on the Enrichment of Structural Properties

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Y3+ composition and particle size influenced magnetic and dielectric properties of nanocrystalline Ni0.5Cu0.5YxFe2-xO4 ferrites

Cited by 27 publications

References 61 publications

Structural, Magnetic, and Mössbauer Investigation of Mg-Ni-Co ferrites doped by Sm3+ sions

Structural, Magnetic, and Mössbauer Investigation of Mg-Ni-Co ferrites doped by Sm3+ sions

Eco-friendly Co-Mg-La nanoferrites for an efficient MB removal for wastewater treatment applications

Fabrication and Study of the Effect of Mn-Substituted Ba-Zn Nanoferrites on the Enrichment of Structural Properties

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Product

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Structural, Magnetic, and Mössbauer Investigation of Mg-Ni-Co ferrites doped by Sm³⁺ sions

Structural, Magnetic, and Mössbauer Investigation of Mg-Ni-Co ferrites doped by Sm³⁺ sions