Influence of MnZn Ferrite Homogeneous Fibers on the Microstructure, Magnetic, and Mechanical Properties of MnZn Ferrite Materials

Shang, Yajing; Luo, Fan; Duan, Zhongxia

doi:10.3390/ma16010209

Cited by 6 publications

(2 citation statements)

References 22 publications

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“…The relative loss factor is set to 1.5 × 10 −6 [12]. The relative permeability µ r is varied as 800, 2000, 5000, 10 000, and 15 000, which cover the range of most relative permeabilities of commercial MnZn ferrite material [39][40][41][42]. The inner aspect ratio α = L i /D i of the shields are set to be 1 and 2 (without considering the slight error due to the gaps), because most of cylindrical magnetic shields have aspect ratios in the range of 1-2 [13,43].…”

Section: Methodsmentioning

confidence: 99%

Effect of gaps on magnetic noise of cylindrical ferrite shield

Lu¹,

Sun²,

Ma³

et al. 2021

J. Phys. D: Appl. Phys.

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Cylindrical ferrite shields consisting of multiple annuli can provide low-magnetic-noise environments. However, the gaps between different parts of the shield adversely affect the shielding performance. In this study, we numerically study the influence of the gaps on both the axial and radial magnetic noise of the multi-annular ferrite shield with different gap widths, permeabilities, and aspect ratios using the generalized Nyquist relation and the finite element method. Our study indicates that as the gap width increases, the axial magnetic noise decreases, while the radial magnetic noise increases. For the shield with a gap width of 0.10 mm and an aspect ratio of one in our study, the axial magnetic noise decreases by 5.2%, and the radial magnetic noise increases by 8.3%–33.5%. The difference in the increase is related to the permeability, and gaps have smaller effect on the radial magnetic noise of the shield with lower permeabilities. Therefore, compared with the no-gap shield, the multi-annular ferrite shield can provide an even better low-magnetic-noise environment along the axial direction. Although the gaps can induce an increase of the radial magnetic noise, this detrimental effect can be suppressed significantly by using a ferrite material with lower permeability and reducing the gap width. Our findings can aid in the application and optimization of low-noise ferrite shields.

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Section: Methodsmentioning

confidence: 99%

Effect of gaps on magnetic noise of cylindrical ferrite shield

Lu¹,

Sun²,

Ma³

et al. 2021

J. Phys. D: Appl. Phys.

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“…Shang et al synthesized homogeneous MnZn ferrite fibers using the solvothermal method and used them as a reinforcing phase to prepare homogeneous-fiber-reinforced MnZn ferrite materials [ 2 ]. The best magnetic and mechanical properties were obtained at a fiber content of about 2 wt%.…”

Section: Soft Ferrite Materialsmentioning

confidence: 99%

Special Issue: “Soft Magnetic Materials and Their Applications”

Che

2023

Materials

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Nickel–iron and zinc–iron bimetal oxalates: preparation, characterization and thermal decomposition to spinel ferrites

Lisníková,

Novák,

Kopp

2023

Chem. Pap.

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A systematic investigation of Ni and Zn spinel ferrites preparation via oxalate route, involving a detailed characterization of synthesized precursors, in situ study of thermally induced decomposition reactions and analyses of the prepared ferrites is presented. Although the oxalate route in general is rather well known, the detailed investigations of the decomposition reactions of the well-characterized bimetal oxalate precursors have been mostly omitted by the authors. The formation of the solid solution, i.e., the incorporation of both metals into the single oxalate crystal structure, is essential for the subsequent decomposition reaction and synthesis of pure spinel ferrites. The optimally prepared precursor decomposes in a single reaction step at relatively low temperatures, evading the undesirable sintering, and allowing the preparation of microporous/mesoporous ferrites with relatively high BET areas.

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Influence of MnZn Ferrite Homogeneous Fibers on the Microstructure, Magnetic, and Mechanical Properties of MnZn Ferrite Materials

Cited by 6 publications

References 22 publications

Effect of gaps on magnetic noise of cylindrical ferrite shield

Effect of gaps on magnetic noise of cylindrical ferrite shield

Special Issue: “Soft Magnetic Materials and Their Applications”

Nickel–iron and zinc–iron bimetal oxalates: preparation, characterization and thermal decomposition to spinel ferrites

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