Registration Number
0225U000366,
(0122U001886)
, R & D reports
Title
Physical bases of creation of materials with controlled magnetostructural and thermodynamic characteristics
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Експериментальне та теоретичне дослідження зміни магнітних та термодинамічних характеристик сплавів з магнітоструктурними фазовими переходами за наявності магнітного поля.
Head
Kosohor Anna O., Доктор фізико-математичних наук
Krupa Mykola M., Доктор фізико-математичних наук
Registration Date
10-01-2025
Organization
Institute of Magnetism NAS of Ukraine and MES of Ukraine
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The aim of this project is the theoretical and experimental study of the magnetic and magnetocaloric properties of materials with magnetostructural phase transition and nanostructures based on them and to provide recommendations for the creation and practical application of new magnetic materials.
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Expressions for describing the magnetocaloric effect in Heusler alloys were obtained and a phase diagram of magnetic field – temperature was created and the decisive role of the influence of magnetoelastic coupling on the thermal hysteresis of the ferromagnet-paramagnetic transition was shown. A physical model and a new mechanism for changing the tunnel magnetic capacitance (TMC) in tunnel magnetic contacts with perpendicular magnetic anisotropy of the electrodes were developed. It was shown that in liquid crystals with magnetic nanoparticles, under the action of a magnetic field, a magnetically induced orientation of the liquid crystal director can occur due to the ordering of magnetic nanoparticles in a magnetic field and the deformation ordering of liquid crystal molecules. Schemes for constructing a system based on such liquid crystals with magnetic nanoparticles for recording an inhomogeneous magnetic field have been developed and a patent of Ukraine for the invention has been obtained. It has been shown that low-temperature aging allows a significant increase in the strength of ternary metastable titanium alloys by 1.5 to 2 times.
Product Description
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Derecha Dmytro O.
Dzhezheria Yurii I.
Koslova Larysa Yе.
Konopliuk Serhii M.
Korostil Andrii-Volodymyr M.
Lvov Viktor A.
Saliuk Olha Yu.
Skyrta Yurii B.
Titenko Anatolii M.
Cherepov Serhii V.
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2025-01-10
