Synthesis and characterization of Ca substituted Ni-Zn nanoferrites- microstructural, magnetic and dielectric analysis

Punia, Pinki; Thakur, Preeti; Kumar, Rakesh; Syal, Rajat; Dhar, Rakesh; Thakur, Atul

doi:10.1016/j.jallcom.2022.167248

Cited by 21 publications

(3 citation statements)

References 38 publications

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“…β hkl stands for the full width at half maximum, which is widely known as the FWHM of a peak [34]. The W-H plot for the tested samples displays a strain value that is negative, indicating a compressive nature [35]. The crystal system is under tensile strain when there is a positive lattice strain, which increases lattice spaces, while the negative strain for x > 0 may be due to lattice shrinking, as can be seen from the lattice parameter values in table 1 [36].…”

Section: Resultsmentioning

confidence: 99%

Reduced A–B super exchange interaction in zirconium doped cobalt ferrite due to laser irradiation

Ateia,

Fangary,

Ghafar

2024

Phys. Scr.

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The impact of Nd:YAG laser irradiation and the addition of zirconium ions (Zr4+) on the physical properties of CoFe2O4 spinel nano-ferrites has been studied. The co-precipitation method was used to synthesize the samples. X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) were employed to examine the structure and morphology. The decrease in the Curie temperature Tc is due to the laser irradiation and the increase in the Zr content of the sample. This decline in Tc is a result of an increase in the canting of the spins, leading to a change in the thermal energy needed for compensate the spin alignment. The difference in the Tc between the non irradiated and the irradiated samples is about 7%, 43% and 34% for CoFe2O4, Co1.1Zr0.1Fe1.8O4, and Co1.3Zr0.3Fe1.4O4, respectively. The decrease in the coercivity of the laser irradiated sample is due to a reduction in the magnetic anisotropy and an altered distribution of the cations (Co2+, Fe3+, Zr4+). The observed trend indicates that laser irradiation, and Zr substitution, can be used to modify the magnetic hardness of the samples. The low coercivity of irradiated Co1.1Zr0.1Fe1.8O4 makes it suitable for a range of applications. The high-frequency response of the Co1+xZrxFe2–2xO4 NPs shows that they can operate within the frequency range of 7.5 GHz–11.56 GHz.

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Section: Resultsmentioning

confidence: 99%

Reduced A–B super exchange interaction in zirconium doped cobalt ferrite due to laser irradiation

Ateia,

Fangary,

Ghafar

2024

Phys. Scr.

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“…It also has a natural resonance in GHz frequencies [1] . Its multifunctionality in this EM wave field is enhanced [27] . Ferrite can improve homogenous distribution in the polymer medium and lessen agglomeration when coated over another substrate, ensuring enough ferrites for shielding application at a low loading concentration [28]…”

Section: Introductionmentioning

confidence: 99%

“…[1] Its multifunctionality in this EM wave field is enhanced. [27] Ferrite can improve homogenous distribution in the polymer medium and lessen agglomeration when coated over another substrate, ensuring enough ferrites for shielding application at a low loading concentration. [28] Using different fillers as a hybrid can be a promising strategy to obtain materials with improved mechanical, electrical, or thermal properties.…”

Section: Introductionmentioning

confidence: 99%

Improved EMI Shielding Behavior of Barium Ferrite Coated Carbon Fibers in Low‐Density Polyethylene Composites with an Optimized Electroless Coating Process

Praveen,

Krishna,

Karthikeya

et al. 2024

ChemistrySelect

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This study describes using carbon fibers coated with magnetic material as a filler in polyethylene for EMI shielding. It investigates how to utilize barium ferrite (BaFeO3) as a conducting filler in a polyethylene matrix by optimizing the conditions for its electroless deposition onto carbon fibers. Various polymer nanocomposite samples were prepared using varying concentrations of BFO@CF. Scanning electron microscopy is used to assess the surface appearance of the composite and the distribution of BFO@CF within the polymer matrix. Including MWCNT/graphene nanoplatelets exhibit superior shielding properties, and the polymer composite with the BFO@CF demonstrates enhanced mechanical properties. The 8.2 to 12.4 GHz frequency range is used to study the EMI shielding properties. For the composition ratio of LDPE: MWCNT: GNP: BFO@CF (50 : 5 : 47.5 : 2.5), a maximum shielding of 67 dB was attained. After BFO@CF was added to the matrix, the absorption mechanism rather than the reflection mechanism dominated the shielding mechanism. A thorough evaluation and discussion of the shielding mechanism and parameters are presented.

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Structural, Morphological, Spectroscopic, and Magnetic Properties of Mg-Zn Nanoferrite for High-frequency Applications

Kumari,

Dhanda,

Kharbanda

et al. 2023

Springer Proceedings in Materials

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Synthesis and characterization of Ca substituted Ni-Zn nanoferrites- microstructural, magnetic and dielectric analysis

Cited by 21 publications

References 38 publications

Reduced A–B super exchange interaction in zirconium doped cobalt ferrite due to laser irradiation

Reduced A–B super exchange interaction in zirconium doped cobalt ferrite due to laser irradiation

Improved EMI Shielding Behavior of Barium Ferrite Coated Carbon Fibers in Low‐Density Polyethylene Composites with an Optimized Electroless Coating Process

Structural, Morphological, Spectroscopic, and Magnetic Properties of Mg-Zn Nanoferrite for High-frequency Applications

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