Magnetization, magnetic anisotropy and magnetocaloric effect of the Tb0.2Gd0.8 single crystal in high magnetic fields up to 14 T in region of a phase transition
Source abstract
Abstract
Abstract The Tb0.2Gd0.8 single crystal magnetization, magnetic anisotropy and adiabatic temperature change ΔT dependencies on magnetic field and temperature have been studied in high magnetic fields (up to 14 T). In this work, we analyze experimental data within the framework of thermodynamic Landau theory for second order magnetic phase transitions to describe the relationship between the magnetization, adiabatic temperature change ΔT and magnetic field in the region of a phase transition. Moreover, it is proved that the Landau-Ginzburg equations are applicable in the case of high magnetic fields. Furthermore it is discovered that the adiabatic temperature change is proportional to the magnetic field with the relation ΔT ∼ (μ0H)2/5 in the region of high magnetic fields.
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Research context
OpenAlex topics: Magnetic and transport properties of perovskites and related materials · Magnetic Properties of Alloys · Shape Memory Alloy Transformations
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