Unusual increase in permeability in cobalt substituted Ni-Zn-Mg ferrites

Gangaswamy, D. R. S.; Bharadwaj, S.R.; Varma, M. Chaitanya; Choudary, G. S. V. R. K.; Rao, K. H.

doi:10.1016/j.jmmm.2018.07.075

Cited by 19 publications

(6 citation statements)

References 20 publications

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“…Moreover, the introduction of doping with rare earth (RE) ions results in the creation of additional pinning sites inside the ferrite material, hence increasing its coercivity. These findings are consistent with the outcomes documented with RE ferrites [50,51]. Further, the electronic structure of Sm 3+ causes lattice distortion, which may contribute to anisotropy and may be the cause of the variable coercivity behavior.…”

Section: Magnetic Measurementssupporting

confidence: 90%

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: Magnetic Measurementssupporting

confidence: 90%

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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“…Metal oxides such as MgO, ZnO, and Fe 2 O 3 are the raw materials utilized for the preparation of Mg‐Zn nanoferrites by this conventional solid‐state method. Ni‐Co, Co‐Ni‐Zn‐Mg, Mg‐Zn, Ni‐Mg‐Zn, Al‐Mg‐Zn, Mg‐Mn‐Zn, and Mg‐Ca are some ferrites which are synthesized by the method 67, 76, 162–168.…”

Section: Synthesis Methods Of Mg‐zn Ferritementioning

confidence: 99%

“…Ni-Co, Co-Ni-Zn-Mg, Mg-Zn, Ni-Mg-Zn, Al-Mg-Zn, Mg-Mn-Zn, and Mg-Ca are some ferrites which are synthesized by the method [67,76,[162][163][164][165][166][167][168]. Fig.…”

Section: Conventional Ceramicmentioning

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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“…The application of magnetic nanoparticles (MNPs) depends on their physical properties, which are affected by the chemical composition and synthesis method [3]. Many researchers investigated the influence of cation replacement on the crystal structure and optical, electrical, and magnetic properties of Zn-Mg ferrite nanoparticles by doping divalent, trivalent, or rare earth cations [4][5][6][7][8][9][10][11][12][13][14][15]. However, the study on the effect of Cr 3+ doping on the magnetic properties of Zn-Mg ferrite nanoparticles is limited.…”

Section: Introductionmentioning

confidence: 99%

Effect of Cr3+ Doping on Magnetic Properties of Zn-Mg Ferrite Nanoparticles

Yang

et al. 2023

Magnetochemistry

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Zn0.6Mg0.4CrxFe2−xO4 (0 ≤ x ≤ 0.4) nanoparticles were synthesized using a hydrothermal technique. The obtained magnetic nanoparticles (MNPs) exhibited a spinel structure, where the lattice constant decreased with the Cr3+ ion content. The doping of Cr3+ ion (x = 0.1) increased the specific saturation magnetization to 46.4 emu/g but decreased to 20.0 emu/g with the further increase in the Cr3+ ion content to x = 0.4. The decrement in Curie temperature was ascribed to the weakened super-exchange interaction between the metal ions located at A-sites and B-sites, which arose from the doping of the Cr3+ ion. The T2-weighted images gradually darkened with the increase in Zn0.6Mg0.4Cr0.1Fe1.9O4 nanoparticles concentration, suggesting that the nanoparticles can enhance the image contrast. Zn0.6Mg0.4CrxFe2−xO4 (0 ≤ x ≤ 0.4) nanoparticles were able to heat the agar phantom to the hyperthermia temperature under the safe alternating magnetic field, which showed their potential in the magnetic induction hyperthermia.

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Unusual increase in permeability in cobalt substituted Ni-Zn-Mg ferrites

Cited by 19 publications

References 20 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

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

Effect of Cr3+ Doping on Magnetic Properties of Zn-Mg Ferrite Nanoparticles

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