Magnetic and microwave absorbing properties of Co 2+ substituted nickel–zinc ferrites with the emphasis on initial permeability studies

Ghodake, J.S.; Kambale, Rahul C.; Shinde, Tukaram J.; Maskar, P.K.; Suryavanshi, S.S.

doi:10.1016/j.jmmm.2015.11.009

Cited by 113 publications

(19 citation statements)

References 20 publications

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“…When the doping content increases, Sb 3+ ions do not enter the lattice, but enriched at the grain boundary to form Sb2O3 phase. The lattice constant (a) can be calculated by the relation [29]:…”

Section: Structural Propertiesmentioning

confidence: 99%

Structural and magnetic properties of Sb3+ ions doped Ni–Ba–Co ferrite prepared by sol–gel method

Zhang

Sun

Shao

et al. 2021

J Mater Sci: Mater Electron

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In the present work, nanocrystalline Sb 3+ ions doped Ni0.2Ba0.1Co0.7Fe2-xSbxO4 (0≦x≦0.1, step by 0.025) ferrites were prepared via sol-gel method. The spinel-phase structure of samples can be confirmed by X-ray diffraction (XRD) patterns. The composition and structure were further studied by fourier transform infrared spectroscopy (FTIR). There were two typical characteristic bands 1 and 2 related to the stretching vibrations in spinel ferrite in FTIR spectra. Energy dispersive spectrometer (EDS) analyzed the elements of samples. It indicated that the elements of Ni, Ba, Co, Fe, O and Sb existed in the samples. Vibrating sample magnetometer was used to characterize magnetic properties. The saturation magnetization decreased from 57.65 emu/g to 44.50 emu/g with the increasing Sb 3+ions content, which is attributed to Fe 3+ ions replaced by the Sb 3+ ions. Remanent magnetization and coercivity first decreased and then increased slightly.

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Section: Structural Propertiesmentioning

confidence: 99%

Structural and magnetic properties of Sb3+ ions doped Ni–Ba–Co ferrite prepared by sol–gel method

Zhang

Sun

Shao

et al. 2021

J Mater Sci: Mater Electron

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“…[13][14][15] In addition, nickel-zinc ferrite is one of the so magnetic materials which has large resistivity (10 6 U cm), high saturation magnetization, a high Curie temperature (570 C), low coercivity and low dielectric. 16,17 Thus, the doping of metal ions in the nickel spinel structure may result to tune the structural, morphological, electrical and magnetic properties that lead to improve these properties for technological progress. For example, doping of nickel ferrites with zinc ions as a mixed spinel was studied by Rahimi and co-workers.…”

Section: Introductionmentioning

confidence: 99%

Positron annihilation lifetime, cation distribution and magnetic features of Ni_1−xZn_xFe_2−xCo_xO₄ ferrite nanoparticles

et al. 2017

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“…It is simply known that the conducting materials such as metal particles, sheets, and various forms of carbons and conductive polymers can be used to reflect the electromagnetic waves while different types of magnetic materials could be employed to absorb the electromagnetic waves. Soft and hard ferrites are the most extensively studied magnetic materials for the electromagnetic interference (EMI) shielding, specifically microwave or radar absorbing, applications [1][2][3][4][5][6][7][8]. The unique structural and physical features of single or mixed-structure ferrites make them proper materials for absorbing of electromagnetic waves in the relatively high-frequency region (8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18) which is an important range for radar absorbing and military applications.…”

Section: Introductionmentioning

confidence: 99%

Quantifying structural and electromagnetic interference (EMI) shielding properties of thermoplastic polyurethane–carbon nanofiber/magnetite nanocomposites

et al. 2016

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In this study, mixed-structure carbon-magnetite nanocomposites were prepared by decorating of carbon nanofiber (CNF) surfaces with magnetite (Fe 3 O 4 ) nanoparticles synthesized via reflux method and characterized. The compositions of CNF-Fe 3 O 4 nanocomposites were varied using different amounts of CNF into the Fe 3 O 4 synthesis medium as 25/75, 50/50, and 75/25 (w/w). These nanocomposites were then used as functional fillers to prepare flexible, thermoplastic polyurethane (TPU)-based electromagnetic interference (EMI) shielding composites by solution mixing method. Structural features of fillers, morphological, and electromagnetic properties of flexible composites were studied. It was found that the magnetite nanoparticles with the average size of 8-10 nm were formed and successfully covered the oxidized CNF surfaces. It was also found that the resulting CNF-Fe 3 O 4 nanocomposites exhibited sufficiently high saturation magnetization (M s ) values compared to Fe 3 O 4 . These CNF-Fe 3 O 4 nanocomposites were embedded into TPU phase by employing the weight percent of 20 wt%. The flexible TPU-CNF-Fe 3 O 4 nanocomposite having the composition of 80-5-15 wt% showed the reflection loss (RL) value of -32 dB which signified that the composite material could absorb the 97 % of an incident electromagnetic wave at around 12.14 GHz.

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Magnetic and microwave absorbing properties of Co 2+ substituted nickel–zinc ferrites with the emphasis on initial permeability studies

Cited by 113 publications

References 20 publications

Structural and magnetic properties of Sb3+ ions doped Ni–Ba–Co ferrite prepared by sol–gel method

Structural and magnetic properties of Sb3+ ions doped Ni–Ba–Co ferrite prepared by sol–gel method

Positron annihilation lifetime, cation distribution and magnetic features of Ni_1−xZn_xFe_2−xCo_xO₄ ferrite nanoparticles

Quantifying structural and electromagnetic interference (EMI) shielding properties of thermoplastic polyurethane–carbon nanofiber/magnetite nanocomposites

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Magnetic and microwave absorbing properties of Co 2+ substituted nickel–zinc ferrites with the emphasis on initial permeability studies

Cited by 113 publications

References 20 publications

Structural and magnetic properties of Sb3+ ions doped Ni–Ba–Co ferrite prepared by sol–gel method

Structural and magnetic properties of Sb3+ ions doped Ni–Ba–Co ferrite prepared by sol–gel method

Positron annihilation lifetime, cation distribution and magnetic features of Ni1−xZnxFe2−xCoxO4 ferrite nanoparticles

Quantifying structural and electromagnetic interference (EMI) shielding properties of thermoplastic polyurethane–carbon nanofiber/magnetite nanocomposites

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Positron annihilation lifetime, cation distribution and magnetic features of Ni_1−xZn_xFe_2−xCo_xO₄ ferrite nanoparticles