Understanding the enhanced microwave permeability of Fe–Si–Al particles by Mössbauer spectroscopy

Han, Mangui; Deng, Longjiang

doi:10.1016/j.jmmm.2013.02.020

Cited by 23 publications

(7 citation statements)

References 18 publications

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“…This study reveals that flaky particles have and average magnetic moment is found to be about 1.63μ B [15].…”

Section: Introductionmentioning

confidence: 68%

“…The magnetic moments for the Fe 1 increase 14.3 % (from 2.24 to 2.56  B ) with respect to a Fe atom in the pure bcc iron structure, while the Fe 2 decrease in a 25.9 % (from 2.24 to 1.66  B ). Hans & Deng recently measured an average magnetic moment in Fe-Si-Al particles of about 1.63  B[15]. The saturation magnetic moment per unit cell is 23.26 B .…”

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confidence: 99%

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Electronic structure and magnetism on FeSiAl alloy: A DFT study

Schwindt

Sandoval

Ardenghi

et al. 2015

Journal of Magnetism and Magnetic Materials

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“…This study reveals that flaky particles have and average magnetic moment is found to be about 1.63μ B [15].…”

Section: Introductionmentioning

confidence: 68%

mentioning

confidence: 99%

Electronic structure and magnetism on FeSiAl alloy: A DFT study

Schwindt

Sandoval

Ardenghi

et al. 2015

Journal of Magnetism and Magnetic Materials

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“…[16][17][18] Yet, many research efforts focus on the high-frequency permeability of composites. [19][20][21][22][23] However, the high-frequency permittivity of composites containing metallic inclusions has seldom been investigated for a long time due to the ambiguous effects created by the microcosmic interactions. 9,10 Recently, numerical simulation techniques, such as finite element method and Monte Carlo method, can give direct insights into how the permittivity is affected by the microstructure, 9,10,13,14 which inspire people to do further research.…”

Section: Introductionmentioning

confidence: 99%

Studies on the microwave permittivity and electromagnetic wave absorption properties of Fe-based nano-composite flakes in different sizes

Han

Liu

Deng

2015

Journal of Applied Physics

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The effective permittivity of composites containing Fe-Cu-Nb-Si-B nanocrystalline micro flakes has been studied within 0.5–10 GHz. Obvious differences in microwave permittivity have been observed for composites consisting of large flakes (size range: 23–111 μm, average thickness: 4.5 μm) and small flakes (size range: 3–21 μm, average thickness: 1.3 μm). Both the real part and imaginary part of permittivity of large flake composite are much larger than these small one in a given frequency. And faster decrease of permittivity with the increasing frequency can be observed for large flake composite than that of small one. These differences in permittivity spectra of different flakes have been explained from the perspective of interfacial polarization and ac conductivity. The assumption that more extensive ohmic contact interface between large flakes and matrix has been validated by the fittings and the calculated percolation threshold. Meanwhile, the permeability spectra of both composites also have been studied by Lorentzian dispersion law. The broadened spectra can be attributed to the distribution of magnetic anisotropy fields of two kinds of ferromagnetic phases in the particles. Finally, the composite containing the small flakes exhibits better electromagnetic wave absorption properties.

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“…More recently, a renewed curiosity on this ternary system has grown especially related to the modification of the magnetic properties induced by microstructural and compositional changes [19]. In this way, several reports have been recently published on samples prepared by arc melting and then nanostructured by means of high energy ball milling [20][21][22][23]. However, there are few articles dealing with fabrication of these ternary nanocrystalline alloys by mechanical alloying from elementary Fe, Al and Si powders and in general those articles are devoted to a single composition [24,25].…”

Section: Introductionmentioning

confidence: 99%