The effect of the cobalt-content on the magnetic properties of iron-based amorphous alloys

Nabiałek, M.; Jeż, B.; Błoch, K.; Gondro, J.

doi:10.1016/j.jmmm.2019.01.073

Cited by 15 publications

(8 citation statements)

References 26 publications

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“…No relationship was observed between the Co and Fe content and the coercive field value. Numerous studies of co-authors have shown that elements such as Zr, Mo, W, or Nb [23,24] have a significant impact on the reduction of H C in alloys based on Fe and Co. In addition, the authors observed a relationship between the value of the coercive field and the width of the amorphous halo.…”

Section: Discussionmentioning

confidence: 96%

The Magnetisation Process of Bulk Amorphous Alloys: Fe36+xCo36−xY8B20, Where: x = 0, 3, 7, or 12

et al. 2020

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Amorphous Fe- and Co-based alloys possess so-called soft magnetic properties. Due to the high sensitivity of the magnetisation vector to any inhomogeneities occurring in these alloys, it is possible to assess indirectly structural defects. This paper presents the results of research on the structure and magnetic properties of bulk amorphous alloys with a high content of Fe and Co. The magnetic properties of the produced alloys were tested using a Faraday magnetic balance and a vibrating sample magnetometer (VSM). Analysis of the magnetisation process in the region known as the approach to ferromagnetic saturation was carried out in accordance with Kronmüller’s theorem. Magnetisation in magnetic fields of greater than the effective anisotropy field (Holstein-Primakoff para-process) was also studied. For the studied alloys, it was found that an increase in Fe content causesan increase in saturation magnetisation, and decreases in the values of the coercive field and thespin-wave stiffness parameter, Dspf. A relationship was observed between the width of the amorphous halo and the value of the coercive field. However, no significant links were found between either the presence of structural defects and the properties of these materials, or between the Co content and the value of the coercive field.

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Section: Discussionmentioning

confidence: 96%

The Magnetisation Process of Bulk Amorphous Alloys: Fe36+xCo36−xY8B20, Where: x = 0, 3, 7, or 12

et al. 2020

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“…A good example illustrating the impact of the production method on the structure and magnetic properties of amorphous alloys is its effect on the Curie temperature. In amorphous alloys produced using the injection-casting method, Tc is usually a few degrees Kelvin lower than in the same alloys produced by the suction-casting method [35,36]. Despite the fact that both methods give the possibility of producing amorphous material, these materials have a different magnetic structure.…”

Section: Methodsmentioning

confidence: 99%

Investigation into the Effect of Thermal Treatment on the Obtaining of Magnetic Phases: Fe5Y, Fe23B6, Y2Fe14B and αFe within the Amorphous Matrix of Rapidly-Quenched Fe61+xCo10−xW1Y8B20 Alloys (Where x = 0, 1 or 2)

et al. 2020

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The paper presents the results of research on the structure and magnetic properties of Fe61+xCo10−xW1Y8B20 alloys (where x = 0, 1 or 2). The alloys were produced using two production methods with similar cooling rates: Injection casting and suction casting. The alloy samples produced were subjected to isothermal annealing at 940 K for 10 min. The structure of the materials was examined using X-ray diffraction. Isothermal annealing has led to the formation of various crystallization products depending on the chemical composition of the alloy and the structure of the alloy in a solidified state. In two cases, the product of crystallization was the hard magnetic phase Y2Fe14B. However, the mechanism of this phase formation was different in both cases. The magnetic properties of alloys were tested using a vibrating sample magnetometer and a Faraday magnetic balance. It is found that the grain crystallite size of the crystalline phases have a decisive influence on the value of the coercive field (especially in the case of hard magnetic phases). It has been shown that privileged areas can already be created during the production process. Their presence determines the crystallization process.

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“…The influence of silicon on the formation of amorphous structure has already been quite well described. There are many studies related to alloys from the Fe-Si-B, [13][14][15][16] Fe-Co-B [17][18][19][20] and Fe-Zr-B [21][22][23][24] systems. However, there is no research on bulk rapidly-cooled alloys from the Fe-Co-B system, with a Si micro-additive; therefore, it was considered appropriate to carry out tests on such a group of alloys.…”

Section: Introductionmentioning

confidence: 99%

The Influence of the Silicon Content on the Formation of Fe23B6 Metastable Phases in Fe65Co11−xB20SixZr2Hf2 Bulk Amorphous Alloys

Nabiałek

Jeż

Błoch

2020

Metall Mater Trans A

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This study aims to determine the effect of addition of a small quantity of Si on the formation of nanocrystalline structure in rapidly cooled Fe-Co-B alloys. As part of the work, the following alloys were produced using a method involving the forcing of each respective liquid alloy into a copper mold: Fe 65 Co 11Àx B 20 Si x Zr 2 Hf 2 (where: x = 0; 0.25; 0.5; 0.75; 1). Analysis of recorded X-ray diffraction patterns confirmed that a nanocrystalline structure was obtained in the alloys. The intensity of the diffraction reflections was found to change with changing Si content. The Fe 23 B 6 crystalline phase was present in the volume of each alloy. This phase has soft magnetic properties. The presence of the Fe 23 B 6 phase was confirmed by measurements of the magnetic polarization of saturation as a function of temperature.

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The effect of the cobalt-content on the magnetic properties of iron-based amorphous alloys

Cited by 15 publications

References 26 publications

The Magnetisation Process of Bulk Amorphous Alloys: Fe36+xCo36−xY8B20, Where: x = 0, 3, 7, or 12

The Magnetisation Process of Bulk Amorphous Alloys: Fe36+xCo36−xY8B20, Where: x = 0, 3, 7, or 12

Investigation into the Effect of Thermal Treatment on the Obtaining of Magnetic Phases: Fe5Y, Fe23B6, Y2Fe14B and αFe within the Amorphous Matrix of Rapidly-Quenched Fe61+xCo10−xW1Y8B20 Alloys (Where x = 0, 1 or 2)

The Influence of the Silicon Content on the Formation of Fe23B6 Metastable Phases in Fe65Co11−xB20SixZr2Hf2 Bulk Amorphous Alloys

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