Dielectric Behavior and Magnetic Properties of Mn-Substituted Ni–Zn Ferrites

Han, Xiufeng; Niaz, N. A.; Ali, Irshad; Nasir, S.; Shakoor, Abdul; Aziz, Abdul; Karamat, Nazia; Khalid, N.R.

doi:10.1007/s11664-015-3770-0

Cited by 29 publications

(6 citation statements)

References 42 publications

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“…For instance, it was reported that the substitution of Al 3+ in the Ni 0.75 Zn 0.25 Fe 2− x Al x O 4 system led to a decrease in the saturation magnetization ( M s ) from 65.40 to 6.75 emu/g, and the replacement of Ni 2+ by Co 2+ increased the M s value from 75.9 emu/g for Ni 0.5 Zn 0.5 Fe 2 O 4 to 80.6 emu/g for Ni 0.25 Co 0.25 Zn 0.5 Fe 2 O 4 . It was also reported that the doping of Cd 2+ , Cr 3+ , Mn 3+ , Ca 2+ , and Mg 2+ , affected Ni–Zn ferrites in the same way as Al 3+ doping . In addition, some cations such as V 5+ and Cu 2+ doped into Ni‐Zn ferrites could form a liquid‐phase during sintering owing to their low melting point …”

Section: Introductionmentioning

confidence: 94%

Microstructure, magnetism, and high‐frequency performance of polycrystalline Ni_0.5Zn_0.5Sm_0.025Ho_xFe_1.975−_xO₄ ferrites

Yang

Liu

et al. 2019

J Am Ceram Soc

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Novel polycrystalline Ni0.5Zn0.5Sm0.025HoxFe1.975−xO4 (x = 0‐0.06) ferrites were fabricated by a traditional solid‐state reaction sintering method. The codoping effects of Sm and Ho on the microstructure, magnetism, and high‐frequency performance of Ni–Zn ferrites were investigated. The substitution of Sm3+ and Ho3+ ions led to an apparent increase in the lattice constants. However, further increasing the addition of both dopants introduced SmFeO3 or HoFeO3 foreign phases at the boundaries of the polycrystalline grains. As the content of Ho3+ ions increased, the relative density and average grain size of the specimens decreased accordingly. Moreover, the substitution of Sm3+ clearly decreased the saturation magnetization and complex permeability, which further decreased with the doping of Ho3+. The evolution of the Curie temperature showed an opposite trend, reaching the highest temperature of 278°C when x = 0.03. Similarly, the coercivity and resonance frequencies also displayed opposite trends compared to those of the saturation magnetization and complex permeability. The codoping of Sm3+ and Ho3+ more effectively lowered the magnetic and dielectric loss tangent of the specimens compared with the undoped or single dopant modified ferrites.

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Section: Introductionmentioning

confidence: 94%

Microstructure, magnetism, and high‐frequency performance of polycrystalline Ni_0.5Zn_0.5Sm_0.025Ho_xFe_1.975−_xO₄ ferrites

Yang

Liu

et al. 2019

J Am Ceram Soc

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“…AC conductivity is a key factor to analyse the electrical properties of ferrites, particularly with regard to the hopping of charges within the specimen. The movement of charges between different valence states and their preference for occupying the B-sites in the crystal structure are important factors [29]. The conductivity behaviour is highly dependent on the grains and grain boundaries, with low frequencies dominated by high resistive grain boundaries and high frequencies characterized by low resistive grains.…”

Section: Variation Of Ac Conductivitymentioning

confidence: 99%

Structural and temperature dependent dielectric behaviour of B_xFe₍₃₋_x₎O₄ nanoferrite particles

Donta

2024

Micro & Nano Letters

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The auto‐combustion technique was employed to synthesize nano particles of BxFe(3−x)O4 (x = 0.0, 0.7, 1.18, 1.36 and 1.54). The resulting structural and dielectric properties of the boron doped Fe3O4 were evaluated. XRD analysis confirmed the presence of a single spinel structure with crystallite dimensions ranging from 21.18 to 26.43 nm and lattice parameters of 8.211 to 8.487 Ǻ. The morphological images revealed homogenous and spherical grain sizes, while EDX confirmed the presence of constituent elements used. The X‐ray density increased whereas the bulk density and the porosity decreased with boron substitution. The study of dielectric properties and AC conductivity (σAC) was demonstrated and the AC conductivity decreased with increasing boron concentration, indicating a hopping mechanism. Moreover, noticeable variations in dielectric loss, AC conductivity, and dielectric permittivity with temperature and frequency were observed. These observations were attributed to the Maxwell–Wagner interfacial polarization and the hopping of charges between Fe3+ and Fe2+ ions.

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“…Consequently, each sample possesses only a single relaxation time. Therefore, the primary factor influencing conduction was the density of grain boundaries [45]. The radii of the arcs initially reduced and then rose in response to the increasing quantity of Fe.…”

Section: Dielectric Properties Analysismentioning

confidence: 99%

The dielectric and radiation shielding features of Zn_0.9Ni_0.1Co_2-xFe_xO₄ nanopowder

Heiba,

Arafat,

Badawi

et al. 2024

Phys. Scr.

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Nano Zn0.9Ni0.1Co2-xFexO4 (x = 0, 0.05, 0.1, 0.15) specimens were synthesized utilizing the hydrothermal method. An extensive assessment was conducted on the structure and dielectric characteristics of the fabricated specimens. The synchrotron x-ray diffraction and scanning electron microscopy techniques were employed to analyze the formed phases and the morphological characteristics of the specimens. Rietveld refinement was utilized for determining the structural and microstructural parameters of all specimens. The impact of temperature and frequency on the dielectric properties of the material is thoroughly investigated. Except for the specimen with x = 0.15, all samples exhibit ferroelectric characteristics. The electric modulus corroborated the existence of the non-Debye relaxation phenomenon and the presence of relaxation times distributed at a specific frequency. Each specimen demonstrates a singular relaxation time, which was modified by the introduction of Fe ions. Through the utilization of the Phy-X/PSD software, the radiation shielding parameters for the examined specimens were computed across a wide energy spectrum ranging from 15 KeV to 15 MeV. These parameters encompass the linear attenuation coefficients (LAC), mean free path (MFP), mass attenuation coefficient (MAC), half value length (HVL), effective nuclear number (Z eff), and fast neutron removal cross-section (FNRCS). The specimens of Zn0.9Ni0.1Co2-xFexO4 exhibit elevated FNRCS values compared to RS-253-G18, RS-360, and RS-520 commercial shielding glasses.

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Dielectric Behavior and Magnetic Properties of Mn-Substituted Ni–Zn Ferrites

Cited by 29 publications

References 42 publications

Microstructure, magnetism, and high‐frequency performance of polycrystalline Ni_0.5Zn_0.5Sm_0.025Ho_xFe_1.975−_xO₄ ferrites

Microstructure, magnetism, and high‐frequency performance of polycrystalline Ni_0.5Zn_0.5Sm_0.025Ho_xFe_1.975−_xO₄ ferrites

Structural and temperature dependent dielectric behaviour of B_xFe₍₃₋_x₎O₄ nanoferrite particles

The dielectric and radiation shielding features of Zn_0.9Ni_0.1Co_2-xFe_xO₄ nanopowder

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Dielectric Behavior and Magnetic Properties of Mn-Substituted Ni–Zn Ferrites

Cited by 29 publications

References 42 publications

Microstructure, magnetism, and high‐frequency performance of polycrystalline Ni0.5Zn0.5Sm0.025HoxFe1.975−xO4 ferrites

Microstructure, magnetism, and high‐frequency performance of polycrystalline Ni0.5Zn0.5Sm0.025HoxFe1.975−xO4 ferrites

Structural and temperature dependent dielectric behaviour of BxFe(3−x)O4 nanoferrite particles

The dielectric and radiation shielding features of Zn0.9Ni0.1Co2-xFexO4 nanopowder

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Microstructure, magnetism, and high‐frequency performance of polycrystalline Ni_0.5Zn_0.5Sm_0.025Ho_xFe_1.975−_xO₄ ferrites

Microstructure, magnetism, and high‐frequency performance of polycrystalline Ni_0.5Zn_0.5Sm_0.025Ho_xFe_1.975−_xO₄ ferrites

Structural and temperature dependent dielectric behaviour of B_xFe₍₃₋_x₎O₄ nanoferrite particles

The dielectric and radiation shielding features of Zn_0.9Ni_0.1Co_2-xFe_xO₄ nanopowder