Temperature affecting the magnetic properties of the Co 79− x Fe 3 Cr 3 Si 15 B x amorphous alloy

Цепелев, В. С.; Starodubtsev, Yu. N.; Zelenin, V. A.; Belozerov, V. Ya.; Konashkov, V. V.

doi:10.1016/j.jallcom.2014.12.236

Cited by 11 publications

(4 citation statements)

References 3 publications

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“…Magnetic materials are used mainly in the temperature range from 220 to 380 K, and reference magnetic properties are given for the same temperature range. Soft magnetic materials with a Curie point near the upper boundary of this interval have the highest magnetic permeability [136], because the magnetic anisotropy constant is lower here. Near the Curie point, the saturation magnetization is also lower and, therefore, there is a tendency to a increase in permeability with decreasing saturation magnetization, see Figure 34b.…”

Section: Applicationsmentioning

confidence: 96%

Nanocrystalline Soft Magnetic Iron-Based Materials from Liquid State to Ready Product

Цепелев

Starodubtsev

2021

Nanomaterials

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The review is devoted to the analysis of physical processes occurring at different stages of production and application of nanocrystalline soft magnetic materials based on Fe–Si–B doped with various chemical elements. The temperature dependences of the kinematic viscosity showed that above a critical temperature, the viscosity of multicomponent melts at the cooling stage does not coincide with the viscosity at the heating stage. Above the critical temperature, the structure of the melt is more homogeneous, the amorphous precursor from such a melt has greater plasticity and enthalpy of crystallization and, after nanocrystallization, the material has a higher permeability. The most effective inhibitor elements are insoluble in α-Fe and form a smoothed peak of heat release during crystallization. On the other hand, the finest nanograins and the highest permeability are achieved at a narrow high-temperature peak of heat release. The cluster magnetic structure of a nanocrystalline material is the cause of magnetic inhomogeneity, which affects the shape of the magnetic hysteresis loop and core losses.

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Section: Applicationsmentioning

confidence: 96%

Nanocrystalline Soft Magnetic Iron-Based Materials from Liquid State to Ready Product

Цепелев

Starodubtsev

2021

Nanomaterials

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“…Полученные результаты исследования в [7] показали изменения магнитных свойств ферритов при добавлении SiO 2 в процессе изготовления ферритов. В [8] исследовано влияния температуры на магнитные свойства аморфного материала з добавлением бора, в результате которых получено изменение магнитных свойств при изменении температуры. В [9] проведены исследования влияния температуры на микроструктуру и магнитные свойства наночастиц BaFe 12 O 19 .…”

Section: анализ литературных данных и постановка проблемыunclassified

Investigation of temperature effect on magnetic characteristics of manganese-zinc ferrites

Кахняж¹,

Салах²,

Шевчик³

et al. 2015

EEJET

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“…Co-B alloys are the subject of numerous studies. These alloys served as the basis for the creation of amorphous soft magnetic materials with high permeability, in which boron contributes to the formation of an amorphous structure [11,12]. Co-B alloys are used as hydrogen storage materials [13] and as transducers to detect acoustic propagation and heat transport at the interface [14].…”

Section: Introductionmentioning

confidence: 99%

The Activation Energy of Viscous Flow and Liquid–Liquid Structure Transition in Co-B Alloys

Starodubtsev,

Tsepelev,

Konashkov

et al. 2023

Metals

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The temperature dependences of the kinematic viscosity during heating and cooling have been investigated in Co-B melts with a boron content of up to 30.8 at. A liquid–liquid structural transition was found, which is accompanied by an increase in the activation energy and cluster size, as well as a significant decrease in the density of the melt. The liquid–liquid structural transition was associated with the formation of clusters with a short-range order of Co23B6 in the intermediate temperature region. At low and high temperatures, clusters of the order of an atomic size are active participants in the viscous flow. It was shown that with an increase in the cluster size, the activation energy increases and the viscosity of melts decreases. The formation of large Co23B6 clusters during the cooling of melt with low boron content leads to undercooling and the appearance of the transition temperature region with high activation energy, although this region does not exist during the heating stage.

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Temperature affecting the magnetic properties of the Co 79− x Fe 3 Cr 3 Si 15 B x amorphous alloy

Cited by 11 publications

References 3 publications

Nanocrystalline Soft Magnetic Iron-Based Materials from Liquid State to Ready Product

Nanocrystalline Soft Magnetic Iron-Based Materials from Liquid State to Ready Product

Investigation of temperature effect on magnetic characteristics of manganese-zinc ferrites

The Activation Energy of Viscous Flow and Liquid–Liquid Structure Transition in Co-B Alloys

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