Correlation Between Structural, Magnetic and Dielectric Properties of Microwave Sintered Ni-Zn-Al Nanoferrites

Ega, Chandra Sekhar; Babu, B. Rajesh; Ramesh, K. V.; Sreenivasulu, M.; Purushotham, Y.

doi:10.1007/s10948-019-5097-1

Cited by 17 publications

(10 citation statements)

References 43 publications

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“…17 The volume of the unit cell (V = a 3 Å 3 ) and specific surface area (S = 6000/ρ x × D XRD ) were calculated 17 that are shown in Table 1 2). 16,18 The bond angles θ 1 and θ 2 represent the A−O−B interaction between the voids, whereas θ 3 and θ 4 signify the bond angles between the B−O−B exchange interactions, and θ 5 corresponds to the A−O−A interactions inside the complexes. 19 The variations of these angles attribute that cations are rearranged with Al contents with different superexchange interactions.…”

Section: Resultsmentioning

confidence: 99%

“…The interpretation of bond angles (θ 1 , θ 2 , θ 3 , θ 4 , θ 5 ) with compositions signifies that the magnetic interactions (A–O–A, A–O–B, B–O–B) weaken and strengthen between the cations and anions inside the sublattices (Table ). , The bond angles θ 1 and θ 2 represent the A–O–B interaction between the voids, whereas θ 3 and θ 4 signify the bond angles between the B–O–B exchange interactions, and θ 5 corresponds to the A–O–A interactions inside the complexes . The variations of these angles attribute that cations are rearranged with Al contents with different superexchange interactions …”

Section: Results and Discussionmentioning

confidence: 99%

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Exploration through Structural, Electrical, and Magnetic Properties of Al³⁺ Doped Ni–Zn–Co Nanospinel Ferrites

2021

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The exploration of aluminum (Al3+) ion substituted nickel–zinc–cobalt (Ni–Zn–Co) nanoferrites is still at the infancy stage, although the structural, electrical, and magnetic properties have been widely investigated. Single-phase cubic nanospinel ferrites of Ni0.4Zn0.35Co0.25Fe2–x Al x O4 (0 ≤ x ≤ 0.12) with space group Fd 3m were confirmed by the Rietveld refinement X-ray diffraction (XRD) data. Lattice constants displayed a declining trend with compositions x. The average particle size was found to range from 29 to 25 nm. Selected area electron diffraction (SAED) patterns were indexed according to space group Fd 3 m , indicating that nanoparticles are well crystallized. Samples’ modes of vibrations swung between redshift and blueshifts as detected in the Raman spectra. The saturation magnetizations (M s) were in the range of 59.85–86.39 emu/g. Frequency-dependent dielectric constants (ε′) and ac resistivity (ρ) measurement suggested that samples were highly resistive. These resistive nanoferrites with high saturation magnetizations may function effectively for multifaceted electronic devices.

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Section: Resultsmentioning

confidence: 99%

Section: Results and Discussionmentioning

confidence: 99%

Exploration through Structural, Electrical, and Magnetic Properties of Al³⁺ Doped Ni–Zn–Co Nanospinel Ferrites

2021

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“…The incorporation of Cu ions in the sample doped with Cu resulted in a slight increase in the lattice parameter (a), indicating lattice distortion. Furthermore, the sample doped with Copper showed higher crystallite size calculated using Scherrer's formula [10], with an increase of 26.40 nm in comparison to 19.43 nm in the non-doped sample. This observation implies that the addition of Cu dopants had an impact on the formation and receiving of the crystallographic domains.…”

Section: Xrd Analysismentioning

confidence: 88%

Tuning Photocatalytic Efficiency through Cu Doping in Ni-Zn Ferrite Nanoparticles: Structural and Optical Characteristics

Bhamare,

Pandit,

Chaudhari

2023

Preprint

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In this study, Undoped and Cu-doped Ni0.6-x Zn0.4CuxFe2O4 (x = 0, 0.3) ferrite nanoparticles were synthesized using the sol-gel auto combustion method. The nanoparticles exhibited a single-phase spinel crystal structure as confirmed by XRD analysis. The crystallite sizes were determined to be in the range of 20 to 30 nm. SEM revealed the nanoparticles to have a spherical morphology. EDS confirmed the elemental composition and purity of the nanoparticles. FTIR analysis provided insights into the vibrational modes and bonding characteristics of the nanoparticles. UV-VIS was employed to investigate the optical properties of the nanoparticles, revealing band gap energies ranging from 2.80 to 3.5 eV. The photocatalytic activity of the nanoparticles was evaluated through the degradation of methylene blue under sunlight irradiation, demonstrating their effectiveness as photocatalysts. These findings contribute structural and optical properties of undoped and Cu-doped Ni-Zn ferrite nanoparticles, emphasizing their potential as efficient photocatalysts for environmental applications.

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“…(Abu-elsaad and Abdel 2019). Moreover, starting from Ag + contents (i.e., x ≥ 0.2), both the octahedral and tetrahedral site bands move toward higher wavenumbers due to the substitution of greater atomic weight Ag + compared with Cu 2+ (Ega et al 2019). FT-IR measurements also revealed significant bands at 3450 cm -1 due to O-H groups and the samples' development of cubic spinel phase is attributed to absorption bands in the region of 1300 cm -1 (Abu-elsaad and Abdel 2019), (Abdel Maksoud et al 2020) .…”

Section: Fourier-transform Infrared (Ft-ir) Spectramentioning

confidence: 99%

Evaluation of synergistic approach of spinel cadmium–copper nanoferrites as magnetic catalysts for promoting wastewater decontamination: Impact of Ag ions doping

Mangood

Gemeay

Abdle-Galeil

et al. 2022

Preprint

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Ferrite magnetic nanoparticles are active in the advanced oxidation process (AOP), which catalyzes the decomposition of H2O2 generating reactive oxygen species (ROS). Noble metal substitution is an efficient strategy to improve the catalytic activity of ferrite-based catalysts. In this study, Cd0.5Cu0.5−xAgxFe2O4 (where 0 ≤ x ≤ 0.5) ferrites were fabricated via simple co-precipitation method. The influence of the silver ions on the structural, magnetic, and catalytic characteristics of the spinel nanoparticles, as well as on their morphology, was examined.. X-ray diffractograms revealed a single-phase cubic spinel structure in all the synthesized samples. The crystallite size was in the nanoregime (7–15 nm), and it decreased similarly to the saturation magnetization from 29.8 to 2.80 emu as the Ag+ doping increased. Two prominent absorption bands were visible in Fourier-transform infrared spectra at 600 cm− 1 and 400 cm− 1, respectively, and they belonged to the tetrahedral (A) and octahedral (B) sites. The samples were then used as catalysts for the oxidative breakdown of the typical organic contaminant indigo carmine dye (IC). The catalytic process followed the first-order kinetic model, and the rate constant increased from 0.007 to 0.023 min− 1 with increasing of Ag+ doping. Cd0.5Cu0.5−xAgxFe2O4 exhibited excellent catalytic performance in the whole pH range of 2–11, especially in the strong alkaline environment. Cd0.5Cu0.5−xAgxFe2O4 was a promising efficient and stable material for Fenton-based alkaline wastewater treatment. Finally, the pathway includes, HO•, HO2−•, O2−• as oxidants resulted from the synergistic effects of Fe3+, Cu2+, and Ag+, with H2O2 and surface hydroxyl groups has been proposed.

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Correlation Between Structural, Magnetic and Dielectric Properties of Microwave Sintered Ni-Zn-Al Nanoferrites

Cited by 17 publications

References 43 publications

Exploration through Structural, Electrical, and Magnetic Properties of Al³⁺ Doped Ni–Zn–Co Nanospinel Ferrites

Exploration through Structural, Electrical, and Magnetic Properties of Al³⁺ Doped Ni–Zn–Co Nanospinel Ferrites

Tuning Photocatalytic Efficiency through Cu Doping in Ni-Zn Ferrite Nanoparticles: Structural and Optical Characteristics

Evaluation of synergistic approach of spinel cadmium–copper nanoferrites as magnetic catalysts for promoting wastewater decontamination: Impact of Ag ions doping

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Correlation Between Structural, Magnetic and Dielectric Properties of Microwave Sintered Ni-Zn-Al Nanoferrites

Cited by 17 publications

References 43 publications

Exploration through Structural, Electrical, and Magnetic Properties of Al3+ Doped Ni–Zn–Co Nanospinel Ferrites

Exploration through Structural, Electrical, and Magnetic Properties of Al3+ Doped Ni–Zn–Co Nanospinel Ferrites

Tuning Photocatalytic Efficiency through Cu Doping in Ni-Zn Ferrite Nanoparticles: Structural and Optical Characteristics

Evaluation of synergistic approach of spinel cadmium–copper nanoferrites as magnetic catalysts for promoting wastewater decontamination: Impact of Ag ions doping

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Exploration through Structural, Electrical, and Magnetic Properties of Al³⁺ Doped Ni–Zn–Co Nanospinel Ferrites

Exploration through Structural, Electrical, and Magnetic Properties of Al³⁺ Doped Ni–Zn–Co Nanospinel Ferrites