Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Magnetocaloric Effect, Structure, Spinodal Decomposition and Phase Transformations Heusler Alloy Ni-Mn-In. / Кузнецов, Дмитрий Димтриевич; Kuznetsova, E I; Mashirov, A V; Loshachenko, A S; Danilov, D V; Mitsiuk, V I; Kuznetsov, A S; Shavrov, Vladimir G.; Koledov, Viktor V.; Ari-Gur, P.
в: Nanomaterials, Том 13, № 8, 1385, 16.04.2023.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Magnetocaloric Effect, Structure, Spinodal Decomposition and Phase Transformations Heusler Alloy Ni-Mn-In
AU - Кузнецов, Дмитрий Димтриевич
AU - Kuznetsova, E I
AU - Mashirov, A V
AU - Loshachenko, A S
AU - Danilov, D V
AU - Mitsiuk, V I
AU - Kuznetsov, A S
AU - Shavrov, Vladimir G.
AU - Koledov, Viktor V.
AU - Ari-Gur, P
N1 - In-situ исследования фазовых переходов в сплаве Гейслера Ni46Mn41In13
PY - 2023/4/16
Y1 - 2023/4/16
N2 - Ni46Mn41In13 (close to 2-1-1 system) Heusler alloy was studied by magnetization measurement dependence on the temperature in magnetic fields of up to 13.5 T. The magnetocaloric effect measured by the direct method in quasi-adiabatic conditions showed a maximum value of ∆Tad = -4.2 K at a temperature T = 212 K in a magnetic field of 10 T in the region of martensitic transformation. The structure of the alloy was studied by transmission electron microscopy (TEM) as a function of the temperature and the thickness of the sample foil. In the temperature range from 353 to 215 K, at least two processes were established. The results of the study indicate that the concentration stratification occurs according to the mechanism of spinodal decomposition (conditionally spinodal decomposition) into nanoscale regions. At a temperature of 215 K and lower, martensitic phase with 14 M modulation is observed in the alloy at thicknesses greater than 50 nm. Some austenite is also observed. In foils with thickness of less than 50 nm in a temperature range from 353 to 100 Km only the initial austenite, which has not transformed, was found.
AB - Ni46Mn41In13 (close to 2-1-1 system) Heusler alloy was studied by magnetization measurement dependence on the temperature in magnetic fields of up to 13.5 T. The magnetocaloric effect measured by the direct method in quasi-adiabatic conditions showed a maximum value of ∆Tad = -4.2 K at a temperature T = 212 K in a magnetic field of 10 T in the region of martensitic transformation. The structure of the alloy was studied by transmission electron microscopy (TEM) as a function of the temperature and the thickness of the sample foil. In the temperature range from 353 to 215 K, at least two processes were established. The results of the study indicate that the concentration stratification occurs according to the mechanism of spinodal decomposition (conditionally spinodal decomposition) into nanoscale regions. At a temperature of 215 K and lower, martensitic phase with 14 M modulation is observed in the alloy at thicknesses greater than 50 nm. Some austenite is also observed. In foils with thickness of less than 50 nm in a temperature range from 353 to 100 Km only the initial austenite, which has not transformed, was found.
KW - сплавы Гейслера
KW - electron microscopy
KW - high resolution transmission electron microscopy (HR TEM)
KW - magnetization transmission
KW - magnetocaloric effect
KW - martensitic transformation
KW - metamagnetostructural transformation
KW - nano austenite
KW - nano martensite
KW - premartensitic states
KW - spinodal decomposition
UR - https://www.mendeley.com/catalogue/05f74971-f058-318f-ace6-eb3dfe230afb/
U2 - 10.3390/nano13081385
DO - 10.3390/nano13081385
M3 - Article
C2 - 37110970
VL - 13
JO - Nanomaterials
JF - Nanomaterials
SN - 2079-4991
IS - 8
M1 - 1385
ER -
ID: 106657676