Structural, optical, dielectric, and magnetic properties of Sr0.7La0.3Zn0.3Fe11.7–Al O19 hexaferrite synthesized by the solid-state reaction method

Zhang, Wenhao; Li, Jie; Li, Jiawei; Guo, Jing; Wang, Yonglun; Zu, Peng; Li, Pengwei

doi:10.1016/j.jssc.2021.122766

Cited by 21 publications

(2 citation statements)

References 89 publications

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“…ε′ possesses high values at the low frequencies while it first decreases and then acquires a constant value in the high-frequency region. This dispersion is due to the interfacial polarization and complies with the Maxwell-Wagner model based on Koop's phenomenon [19,20]. Since grain boundaries are more effective at low frequencies, their high resistivity causes space charge polarization [12].…”

Section: Electrical Characterization 321 Dielectric Constantsupporting

confidence: 66%

Functionalization of morphology in optimization of dielectric, electrical/impedance modulus, and relaxation mechanisms of Co-Ni doped M-type Sr nanoferrites

Naqvi,

Singh,

Godara

et al. 2024

Phys. Scr.

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In this article, novel M-type hexaferrites SrCoxNixFe12-2xO19 were synthesized using the sol-gel method. The phase structure was characterized by X-ray diffraction, grain morphology was investigated from scanned electron micrographs, and dielectric/electric/impedance characteristics were analyzed in the frequency range of 100 Hz to 2 MHz. X-ray diffraction (XRD) revealed the formation of hexaferrites without any secondary phase. The grain size and distribution were significantly affected by Co-Ni dopants and there was an observation of cluster of grains, grain agglomerates, and improved inter-grain connectivity. The substitution of Co-Ni caused a reduction in crystallite size from 41.47 to 23.14 nm and the dielectric constant/loss tangent varied non-monotonically. The electric modulus indicated a non-Debye type relaxation and the charge transport mechanism exhibited conductivity relaxation to be more dominant than dielectric relaxation. The prepared ferrites show a large dielectric constant and hence are suitable for use in transformer core and storage media. The correlation of simulated grain/grain boundary parameters with morphology, dielectric parameter, and electric modulus has been presented.

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Section: Electrical Characterization 321 Dielectric Constantsupporting

confidence: 66%

Functionalization of morphology in optimization of dielectric, electrical/impedance modulus, and relaxation mechanisms of Co-Ni doped M-type Sr nanoferrites

Naqvi,

Singh,

Godara

et al. 2024

Phys. Scr.

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“…It is worth noting that the lattice parameter a exhibited minimal alteration in comparison to the c parameter, in line with the observed behavior of other hexagonal structures, where significant modifications in the c parameter were observed in relation to the lattice parameter a . 43–46 The c / a ratios with varying Gd–Ni concentrations ( x and y ) are in the range of 3.81 to 3.86 and show the formation of a hexagonal structure. To determine the formation of a hexagonal structure type, we utilize the c / a ratio (>3.98) by Verstegen-and-Stevel's law.…”

Section: Resultsmentioning

confidence: 98%

Influence of Gd and Ni doping on the structural, morphological, and magnetic properties of M-type calcium hexaferrite

Chaurasiya,

Kumar,

Lone

et al. 2024

New J. Chem.

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Structural, electrical, and impedance properties of Co and Sn doped Ba0.5Sr0.5Fe12-2xO19 hexaferrite ceramics (0 ≤ x ≤ 1) and their evaluation for antenna application

Singh

Morais

et al. 2023

Appl. Phys. A

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Structural, optical, dielectric, and magnetic properties of Sr0.7La0.3Zn0.3Fe11.7–Al O19 hexaferrite synthesized by the solid-state reaction method

Cited by 21 publications

References 89 publications

Functionalization of morphology in optimization of dielectric, electrical/impedance modulus, and relaxation mechanisms of Co-Ni doped M-type Sr nanoferrites

Functionalization of morphology in optimization of dielectric, electrical/impedance modulus, and relaxation mechanisms of Co-Ni doped M-type Sr nanoferrites

Influence of Gd and Ni doping on the structural, morphological, and magnetic properties of M-type calcium hexaferrite

Structural, electrical, and impedance properties of Co and Sn doped Ba0.5Sr0.5Fe12-2xO19 hexaferrite ceramics (0 ≤ x ≤ 1) and their evaluation for antenna application

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