Modified field dependence of the magnetocaloric effect in Gd powder obtained by ball milling

Svalov, A. V.; Arkhipov, A. V.; Андреев, С. В.; Neznakhin, D. S.; Larrañaga, Aitor; Kurlyandskaya, G. V.

doi:10.1016/j.matlet.2020.128921

Cited by 7 publications

(7 citation statements)

References 11 publications

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“…Задача повышения эффективности теплопередачи между рабочим телом и окружающей средой требует использования магнитных материалов для устройств магнитного охлаждения в различных формах, в том числе и в виде порошков и стабилизированных суспензий на их основе [7][8][9].…”

Section: Introductionunclassified

Магнитокалорический эффект магнитных наночастиц FeNi, полученных методом электрического взрыва проволоки

Курляндская,

Архипов,

Бекетов

et al. 2023

Физика Твердого Тела

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In this work the structure, magnetic properties and of the magnetocaloric effect of the large batches of magnetic FeNi nanoparticles were studied for selected compositions close to the invar. Nanoparticles were synthesized by the method of the electric explosion of wire using various technological parameters ensuring the difference in their dispersion parameters. The main variable parameter was the degree of overheating of the wire material. The use of different technological conditions for obtaining batches of nanoparticles ensured the difference in their dispersion parameters.

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Section: Introductionunclassified

Магнитокалорический эффект магнитных наночастиц FeNi, полученных методом электрического взрыва проволоки

Курляндская,

Архипов,

Бекетов

et al. 2023

Физика Твердого Тела

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“…In addition to a high magnetocaloric effect, high thermal conductivity, appropriate mechanical properties for optimum design [6,7] and enhanced functionalities of the magnetocaloric devices are desired. The materials in the form of powder meet this requirement very well [8][9][10][11]. Now, due to a shortage of water and energy resources, physical and chemical techniques requiring a small amount of water and energy per unit of the obtained material are under special attention [12,13].…”

Section: Introductionmentioning

confidence: 99%

“…For magnetic materials, this causes a decrease in the magnetization value and a slow change of magnetization near the phase transition temperature. Such changes lead to a decrease in the MCE effect value [7,8,11].…”

Section: Introductionmentioning

confidence: 99%

“…RC can be defined as the product of the maximum value of the peak of the magnetic entropy change and the width of ∆S M peak at its half-height [1]. In addition, nanostructuring can enhance the field dependence of the magnetocaloric effect [11,14,17,18]. Moreover, appropriate annealing of polycrystalline materials can, to some extent, restore the perfection of their crystal structure (due to the stress relaxation, movement of the vacancies, etc.)…”

Section: Introductionmentioning

confidence: 99%

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Ball Milled Gd Flakes Subjected to Heat Treatments: Structure, Magnetic and Magnetocaloric Properties

et al. 2022

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Gd flake samples were prepared by conventional ball milling technique starting from rapidly quenched Gd ribbons and followed by vacuum annealing in different conditions. Heat treatments were conducted in a vacuum at selected temperatures up to 600 K. The structural features, magnetic and magnetocaloric properties were comparatively analyzed. The change in magnetic entropy was calculated using an experimental set of magnetic isotherms measured in a wide range of temperatures. The variations in the refrigeration capacity and the exponent of the magnetic entropy change in the external magnetic field were carefully calculated and analyzed.

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“…They attract special attention from both the point of view fundamental physical and chemical properties and variety of practical applications [ 3 , 4 , 5 ]. Among other systems magnetic nanoparticles were in focus for their investigation in technical devices [ 6 , 7 , 8 ] and medical conditions [ 9 , 10 ]. Medical applications require the most strict protocol for nanomaterials and nanodrugs processing [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Magnetoimpedance Thin Film Sensor for Detecting of Stray Fields of Magnetic Particles in Blood Vessel

Melnikov

Lepalovskij

Svalov

et al. 2021

Sensors

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Multilayered [FeNi (100 nm)/Cu (3 nm)]5/Cu (500 nm)/[Cu (3 nm)/[FeNi (100 nm)]5 structures were used as sensitive elements of the magnetoimpedance (MI) sensor prototype for model experiments of the detection of magnetic particles in blood vessel. Non-ferromagnetic cylindrical polymer rod with a small magnetic inclusion was used as a sample mimicking thrombus in a blood vessel. The polymer rod was made of epoxy resin with an inclusion of an epoxy composite containing 30% weight fraction of commercial magnetite microparticles. The position of the magnetic inclusion mimicking thrombus in the blood vessel was detected by the measurements of the stray magnetic fields of microparticles using MI element. Changes of the MI ratio in the presence of composite can be characterized by the shift and the decrease of the maximum value of the MI. We were able to detect the position of the magnetic composite sample mimicking thrombus in blood vessels. Comsol modeling was successfully used for the analysis of the obtained experimental results and the understanding of the origin the MI sensitivity in proposed configuration. We describe possible applications of studied configuration of MI detection for biomedical applications in the field of thrombus state evaluation and therapy.

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Modified field dependence of the magnetocaloric effect in Gd powder obtained by ball milling

Cited by 7 publications

References 11 publications

Магнитокалорический эффект магнитных наночастиц FeNi, полученных методом электрического взрыва проволоки

Магнитокалорический эффект магнитных наночастиц FeNi, полученных методом электрического взрыва проволоки

Ball Milled Gd Flakes Subjected to Heat Treatments: Structure, Magnetic and Magnetocaloric Properties

Magnetoimpedance Thin Film Sensor for Detecting of Stray Fields of Magnetic Particles in Blood Vessel

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