Abstract
Using the density functional theory, the electronic structure; density of states, band structure and exchange couplings of TbNi4Si compound have been investigated. Magnetic and magnetocaloric properties of this material have been studied using Monte Carlo Simulation (MCS) and Mean Field Approximation (MFA) within a three dimensional Ising model. We calculated the isothermal magnetic entropy change, adiabatic temperature change and relative cooling power (RCP) for different external magnetic field and temperature. The highest obtained isothermal magnetic entropy change is of −14.52Jkg−1K−1 for a magnetic field of H=4T. The adiabatic temperature reaches a maximum value equal to 3.7K and the RCP maximum value is found to be 125.12Jkg−1 for a field magnetic of 14T.
Published Version
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