Open AccessМагнитокалорический эффект в сплаве Fe-=SUB=-49-=/SUB=-Rh-=SUB=-51-=/SUB=- в импульсных магнитных полях до 50 T
Author(s) -
А.П. Каманцев,
А.А. Амиров,
Ю.С. Кошкидько,
К. Салазар Мехиа,
А.В. Маширов,
А.М. Алиев,
В.В. Коледов,
В.Г. Шавров
Publication year - 2020
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2020.01.48747.492
Subject(s) - magnetic refrigeration , adiabatic process , ferromagnetism , condensed matter physics , materials science , alloy , magnetic field , absolute zero , phase (matter) , field (mathematics) , thermodynamics , chemistry , physics , magnetization , metallurgy , mathematics , organic chemistry , quantum mechanics , pure mathematics
The direct magnetocaloric effect (MCE) was measured in pulsed magnetic fields up to 50 T in the Fe49Rh51 alloy. At different initial temperatures in the metamagnetic phase transition with an increase in the field up to 20 T, a reverse MCE ∆T ≈ -8 K is observed, while a further increase in the field to 50 T results in a decrease in the absolute value of the adiabatic temperature change by ~ 1 K, which is connected with direct MCE and indicates a complete transition of the sample into the ferromagnetic phase. The maximum of the absolute value of the adiabatic temperature change |∆Т| = 9.8 K with a decrease in the magnetic field of 6 T on initial temperature of 310 K was observed.