Influence of production method on the magnetic parameters and structure of Fe61Co10Y8Nb1B20 amorphous alloys in the as-quenched state

Pietrusiewicz, P.; Nabiałek, M.; Dośpiał, M.; Gruszka, K.; Błoch, K.; Gondro, J.; Brągiel, P.; Szota, M.; Stradomski, Z.

doi:10.1016/j.jallcom.2014.03.028

Cited by 18 publications

(10 citation statements)

References 20 publications

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“…As has been shown in [6,7,11], for the investigated alloy compositions, it is possible to obtain bulk amorphous alloys -despite the narrow value of ∆T x observed for these alloys. This is quite important because it stresses that, in the process of designing the chemical composition for bulk amorphous alloys, the results of investigations performed on samples in the form of ribbons should not be decisive as they are made with totally different parameters.…”

Section: Discussionmentioning

confidence: 58%

“…These minor changes in alloy composition have a relatively major influence on the values of the saturation magnetisation and the coercivity. While the changes in the magnetisation are relatively easy to explain [6,7,11], the sudden increase in the coercivity for the samples where Me=Nb and Mo, is quite complicated. The regions with varying density hinder the free movement of the domain walls and therefore the increase in the coercive field must be taken into account.…”

Section: Discussionmentioning

confidence: 99%

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Analysis of the Thermal and Magnetic Properties of Amorphous Ribbons of Fe_{61}Co_{10}B_{20}Y_8Me_1 (where Me~=~W, Zr, Nb, Mo)

Pietrusiewicz

Nabiałek

2017

Acta Phys. Pol. A

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This paper presents the results pertaining to thermal and magnetic studies of rapidly-cooled samples of the alloy family Fe61Co10B20Y8Me1 (where Me = Nb, Zr, W, Mo). The resulting ribbons, or tapes, have amorphous structure. It has been found that the addition of Me elements alters the thermal and magnetic properties. It is noted that the saturation magnetization decreases with increasing number of unpaired electrons on the valence shells. In addition, the value of the coercivity and effective anisotropy have been determined.

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Section: Discussionmentioning

confidence: 58%

Section: Discussionmentioning

confidence: 99%

Analysis of the Thermal and Magnetic Properties of Amorphous Ribbons of Fe_{61}Co_{10}B_{20}Y_8Me_1 (where Me~=~W, Zr, Nb, Mo)

Pietrusiewicz

Nabiałek

2017

Acta Phys. Pol. A

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“…2 a,b. fig [16,17]. numerical analysis of the recorded Mössbauer spectra facilitated the derivation of the corresponding hyperfine field distributions of 57 Fe nuclei.…”

Section: Resultsmentioning

confidence: 99%

Structure and Soft Magnetic Properties of the Amorphous Alloys: Fe61Co10Ti3-xY6+xB20 (x = 0, 1)

Błoch

2016

Archives of Metallurgy and Materials

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This paper presents studies relating to the structure, soft magnetic properties and thermal stability of the following bulk amorphous alloys: Fe61Co10Ti3-xY6+xB20 (x = 0, 1). On the basis of the performed X-ray diffraction studies and Mössbauer spectroscopy, it was found that investigated samples were amorphous in the as-cast state. The DSC curve obtained for Fe61Co10Ti2Y7B20 alloy exhibited one exothermic peak, while for the Fe61Co10Ti3Y6B20 sample, two peaks were distinguishable. The change in the chemical structure of the investigated alloys has a major effect on their soft magnetic properties; especially on coercivity and saturation magnetization. On the basis of the magnetization curves analysis, the spin wave stiffness parameter Dsp were determined for the investigated alloys.

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“…These materials are characterized by a low coercive field and high saturation magnetization. [1][2][3] From a thermodynamic point of view, the structure of these materials is metastable. Nevertheless, such materials can be applied in devices such as electronic measuring and surveillance systems, magnetic wires, magnetic sensors, band-pass filters, magnetic shielding, energy-saving electric power transformers and other applications.…”

Section: Introductionmentioning

confidence: 99%

The influence of an isothermal annealing process on the structure and magnetic properties of the bulk amorphous alloy FeCoBYMo

Pietrusiewicz¹,

Nabiałek²,

Olszewski³

et al. 2017

Mater. Tehnol.

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This paper presents the results of research into a bulk amorphous alloy based on Fe. Samples with the composition Fe61Co10Y8Mo1B20 were prepared in the form of plates using an injection-casting method. The samples were then subjected to an isothermal annealing process (at less than the crystallization temperature) of 700 K for 1 h and 770 K for 3.5 h The structures of the samples were investigated, both in the state after solidification and following the heat treatment, using X-ray diffraction (XRD) and Mössbauer spectroscopy. The results confirmed that the samples, both after solidification and after annealing, were amorphous. Magnetic measurements were carried out using a vibrating-sample magnetometer (VSM) with magnetic fields of up to 2 T. Based on these measurements, the effect of the isothermal annealing process on the magnetic properties was defined, including the saturation magnetization μ0Ms and coercive field Hc. Using the Kronmüller theory, the initial magnetization curves were analysed in the area of approach to ferromagnetic saturation. On the basis of this theory, the quantity and quality of the structural defects were defined; these defects play a critical role in the magnetization process in high magnetic fields. Following this study, the sample annealed at 770 K for 1 h was found to feature a relatively low coercive field and the higher value of magnetization saturation. Linear defects, the so-called quasidislocational dipoles, played the leading role in the process of magnetization of the test samples. Keywords: bulk amorphous alloys, structure, soft magnetic properties, defectŝ lanek predstavlja rezultate raziskave masivne amorfne zlitine na osnovi Fe. Vzorci s sestavo Fe61Co10Y8Mo1B20 so bili pripravljeni v obliki plo{~, s pomo~jo tla~nega litja. Vzorci so bili izotermno`arjeni 1 h (pri temperaturi ni`ji od temperature kristalizacije) na 700 K in 3,5 h na 770 K. Preiskana je bila struktura vzorcev, v stanju po strjevanju in po toplotni obdelavi. Uporabljena je bila rentgenska difrakcija (XRD) in Mössbauerjeva spektroskopija. Rezultati so potrdili, da so bili vzorci po strjevanju in po`arjenju v amorfnem stanju. Magnetne meritve so bile izvedene s pomo~jo magnetometra z vibriranjem vzorca (VSM) v magnetnih poljih jakosti do 2 T. Na osnovi meritev je bil dolo~en vpliv izotermnega`arjenja na magnetne lastnosti, vklju~no z nasi~eno magnetizacijo μ0Ms in koercitivnim poljem Hc. Z uporabo Kronmüllerjeve teorije so bile analizirane za~etne krivulje magnetizacije blizu podro~ja feromagnetnega nasi~enja. Na osnovi te teorije je bila dolo~ena koli~ina in kakovost strukturnih napak; te napake igrajo klju~no vlogo pri procesu magnetizacije v mo~nih magnetnih poljih. Na podlagi te {tudije je bilo ugotovljeno, da vzorci`arjeni 1 h ka`ejo relativno {ibko koercitivno polje in visoko vrednost nasi~ene magnetizacije. Linearne napake, imenovane kvazi-dislokacijski dipoli, igrajo vodilno vlogo pri procesu magnetizacije preizku{anih vzorcev. Klju~ne besede: masivne amorfne zlitine, struktura, mehko magnetne lastn...

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Influence of production method on the magnetic parameters and structure of Fe61Co10Y8Nb1B20 amorphous alloys in the as-quenched state

Cited by 18 publications

References 20 publications

Analysis of the Thermal and Magnetic Properties of Amorphous Ribbons of Fe_{61}Co_{10}B_{20}Y_8Me_1 (where Me~=~W, Zr, Nb, Mo)

Analysis of the Thermal and Magnetic Properties of Amorphous Ribbons of Fe_{61}Co_{10}B_{20}Y_8Me_1 (where Me~=~W, Zr, Nb, Mo)

Structure and Soft Magnetic Properties of the Amorphous Alloys: Fe61Co10Ti3-xY6+xB20 (x = 0, 1)

The influence of an isothermal annealing process on the structure and magnetic properties of the bulk amorphous alloy FeCoBYMo

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