Structural and Magnetic Properties Study of Fe50Si50 Powders with Different Microparticle Sizes

Perdomo, J. F. González; Hernandez, J. S. Trujillo; Lozano, D. Oyola; Martínez, Y. A. Rojas; Alcázar, G. A. Pérez; Rodríguez, H. Bustos

doi:10.1007/s10948-018-4853-y

Cited by 3 publications

(2 citation statements)

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“…This results from the fragmentation of grains to nanometer sizes. The doublet (red sub-spectrum in Figure 5b) may originate from the FeSi alloy because the values of isomer shift and quadrupole splitting determined for our samples are similar to those obtained for the Fe50Si50 melted alloy [12] as well as for Fe50Si50 nanopowders [13]. The relative contribution of the doublet to the whole Mössbauer spectrum is not large (5% for 5 and 10 h and maximum 19% for the sample milled for 20 h).…”

Section: Mössbauer Spectroscopy Studiessupporting

confidence: 79%

“…Classical arcmelting in an argon atmosphere and subsequent multiple re-melting for homogenization allows for obtaining alloys with good quality crystalline structure. Recently, it has been Nanomaterials 2023, 13, 3024 2 of 13 shown that a highly ordered structure of Heusler alloys may be obtained in the nonequilibrium process, i.e., novel Heusler single-phase alloy Fe 2 CrSi has been synthesized by means of melt-spinning [7]. However, except for the ordered phase, non-ordered or a mixture of ordered and non-ordered phases are often formed, which depends on the heat treatment.…”

Section: Introductionmentioning

confidence: 99%

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Structure and Magnetic Properties of Mechanosynthesized Nanocrystalline Fe2CrSi Heusler Alloy

Jartych,

Jaskółowska,

Oleszak

et al. 2023

Nanomaterials

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Heusler alloys constitute an interesting group of materials with wide applications. The purpose of the present study was to use the mechanical alloying method to synthesize Fe2CrSi Heusler alloy and learn about its structure and magnetic properties. Pure metal elements were ground for various periods of time in a planetary ball mill, and the process of alloy formation was monitored using X-ray diffraction and Mössbauer spectroscopy. It was found that after 20 h of milling, the disordered BCC solid solution was formed, with an average crystallite size ~11 nm. After thermal treatment, the desired Fe2CrSi Heusler alloy was obtained, with a small amount of secondary phases. Detailed XRD analysis showed the coexistence of two varieties of Heusler phase, namely Fm-3m and Pm-3n. The main result of this work is the detection of the hyperfine magnetic field distribution using Mössbauer spectroscopy. The occurrence of this distribution proves atomic disorder in the crystalline structure of the obtained Heusler alloy. Macroscopic magnetic measurements revealed soft magnetic properties of the alloy, with a magnetic moment of ~2.3 μB/f.u., only slightly larger than the theoretically predicted value.

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Section: Mössbauer Spectroscopy Studiessupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%