Detailed analysis of structural and optical properties of spinel cobalt doped magnesium zinc ferrites under different substitutions

Sajjad, Muhammad; Javed, Yasir; Sattar, Abdul; Akbar, Lubna; Nawaz, Ahmad; Rashid, Muhammad Zahid; Rasool, Kamran; Alzaid, Meshal

doi:10.1007/s10854-020-04690-z

Cited by 16 publications

(8 citation statements)

References 6 publications

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“…M.I. is directly correlated with the average crystallite size of nanopowder and is inversely correlated with specific surface area (SSA) [14]. The morphological index of nanomaterials was computed using the following formula ( 9 where FWHMh is the full-width half maxima of the highest and FWHMp is the particular crystalline peaks, respectively.…”

Section: Morphological Index (Mi)mentioning

confidence: 99%

“…The number of dislocation lines per unit volume is used to define defects in nanomaterials; Eq. (14) shows that dislocation density is a sort of topological deformity, and the broadening of the peak is referred to as Trends Sci. 2022; 19 (24): 4430 6 of 13 crystallite size (D) [18].…”

Section: Dislocation Densitymentioning

confidence: 99%

“…2022; 19 (24): 4430 6 of 13 crystallite size (D) [18]. The dislocation density (δ) of the sample was estimated using the provided formula (14).…”

Section: Dislocation Densitymentioning

confidence: 99%

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Detailed Analysis of Crystal Structure and Optical Properties of Green Synthesized Nanoparticles: Application for Photocatalyst Degradation of Methylene Blue

et al. 2022

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We report the green chemistry reduction approach method for the synthesis of Manganese Oxide nanoparticles (MnO NPs), Copper Oxide nanoparticles (CuO NPs) and Manganese-doped Copper Oxide nanoparticles (Mn-doped CuO Nps). Aqueous extract from the seeds was used as reducing and capping agents. The detailed crystal structure analysis was investigated; crystallite size, crystallinity, morphological index, x-ray density, bulk density, specific surface area, porosity, Lorentz factor, Lorentz polarization factor and other parameters were calculated. Simple EDX mapping reveals the presence of Mn, Cu, O and C. FTIR analysis was used to determine the bond length of a nanocomposite. In the visible area, nanoparticles have higher optical absorption, with bandgaps varying from 1.79 (MnO), 2.18 eV (CuO) and 1.72 eV (Mn-doped CuO). After 90 min, the photodegradation rate of Mn-doped CuO nanocatalysts was 93.73 % while using a smaller amount of catalyst (0.1 g) at pH 7. The pseudo-first-order MB photocatalytic decomposition kinetic model has a high correlation coefficient value (R2 > 0.95). It was found that Mn-doped CuO NPs have higher photocatalytic efficiency and can be used as potential photocatalysts for industrial dye degradation. HIGHLIGHTS Green synthesis of Mn, Cu, and Mn-doped Cu nanoparticles by Bambusa seeds extract Characterized via XRD (crystal structure), UV-Vis Diffuse Reflectance spectra (UV-DRS), FT-IR (bond length), and FESEM-EDS analysis Photocatalytic degradation of organic methylene blue dye using Mn-doped CuO nanoparticles GRAPHICAL ABSTRACT

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Section: Morphological Index (Mi)mentioning

confidence: 99%

Section: Dislocation Densitymentioning

confidence: 99%

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Detailed Analysis of Crystal Structure and Optical Properties of Green Synthesized Nanoparticles: Application for Photocatalyst Degradation of Methylene Blue

et al. 2022

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“…It was reported that a large fraction of Mg 2+ ions were positioned on the octahedral site and a small fraction on the tetrahedral site while Zn 2+ ions show a strong preference for the A-sites of the spinel lattice [76]. The nonmagnetic nature of Mg 2+ and Zn 2+ endorse the most effective A-B interaction due to which magnetocrystalline anisotropy energy decreases [77][78][79][80][81][82][83][84][85].…”

Section: Introductionmentioning

confidence: 99%

Mg‐Zn Ferrite Nanoparticles: A Brief Review on Synthesis, Characterizations, and Applications

Thakur,

Kumari,

Singh

et al. 2023

ChemBioEng Reviews

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Ferrites are of great interest for both fundamental science and technological applications due to their outstanding physical, chemical, and magnetic properties. Among various ferrites, Mg‐Zn ferrites is one of the best magnetic materials for researchers due to their unique properties such as high electric resistivity, Curie temperature, low coercivity, low eddy current, dielectric losses, low cost, and better environmental stability. This makes ferrites suitable for many applications such as power transformers, microwave devices, computer memories, logic devices, recording heads, loading coils, antenna rods, color monitoring tubes, telecommunications, hyperthermia, and so forth. Mg‐Zn ferrite nanoparticles have gained increased interest for many applications such as catalysts, antimicrobial potential, and sensors for the detection of combustible gases (CH4, CO, and CO2). In this brief review, the strategies used in the synthesis of Mg‐Zn ferrite nanoparticles are summarized. The different structural, morphological, magnetic, and electric properties of these ferrites are analyzed.

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“…Because alkaline metals are very reactive, they have a single electron on the last layer, which they readily give up to other metals in the ferrite composition. The addition of metal cations to the magnesium-zinc ferrite structure can make an essential contribution to improvingthe conduction mechanism, optical or magnetic properties of semiconductors [ 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Li+ and K+ Added Cations and Annealing Temperature on the Magnetic and Dielectric Properties of Mg-Zn Ferrite

Petrila

Tudorache

2021

Materials

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This paper presents the results of an investigation on the magnetic and dielectric properties of Mg0.5Zn0.5Fe2O4 spinel ferrite with a 1% weight percentage of Li+ and K+ added cations. The addition of metal ions plays an important role in increasing the porosity and favors the formation of ferrite at low temperatures. The goal of this new research is to demonstrate that by selecting the type of metallic cations for addition or choosing an optimal sintering temperature, it may be possible to improve the magnetic and electrical properties of Mg-Zn ferrite. The samples were prepared using sol-gel self-combustion techniques and annealed at 1000°C, 1100°C, and 1200°C. Scanning electron microscopy revealed the shape and grain size of the samples, and the phase composition was analyzed using the X-Ray diffraction technique. The magnetic information, such as remanent magnetization MR, saturation magnetization MS, and coercivity HC, were extracted from the hysteresis loops of the samples. The electrical investigation was focused on the low- and high-frequency dependence of dielectric constant and dielectric losses. The results are discussed in terms of microstructural changes induced by the additions of Li+ and K+ metallic cations. Conclusions are drawn concerning the optimization of magnetic and electrical properties for the development of Mg-Zn ferrite with possible applications in the field of magnetic materials or electronics.

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Detailed analysis of structural and optical properties of spinel cobalt doped magnesium zinc ferrites under different substitutions

Cited by 16 publications

References 6 publications

Detailed Analysis of Crystal Structure and Optical Properties of Green Synthesized Nanoparticles: Application for Photocatalyst Degradation of Methylene Blue

Detailed Analysis of Crystal Structure and Optical Properties of Green Synthesized Nanoparticles: Application for Photocatalyst Degradation of Methylene Blue

Mg‐Zn Ferrite Nanoparticles: A Brief Review on Synthesis, Characterizations, and Applications

The Influence of Li+ and K+ Added Cations and Annealing Temperature on the Magnetic and Dielectric Properties of Mg-Zn Ferrite

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