Abstract
The structure of La2SrMn2O7 (LSMO) bilayer manganite has been investigated using the Monte Carlo simulations and ab initio calculations based on the full-potential linearized augmented plane-wave method. The ferromagnetic phase of LSMO is half-metallic with 100% spin polarization, which is important in relation to the colossal magnetoresistance properties of this compound. Thermal magnetization of LSMO bilayer manganite is obtained for several external magnetic fields h = 1, 3, 5 and 7 T. We have given the dM/dT as a function of temperatures for several external magnetic fields. The magnetic transition from ferromagnetic to paramagnetic is found. The second-order phase transition is found at the transition temperature. The temperature dependence of the magnetic entropy changes of temperatures of LSMO bilayer manganite for several external magnetic fields h = 1, 3, 5 and 7 T is also found. The field dependence of relative cooling power of LSMO bilayer manganite is given for several temperatures. Finally, the magnetic hysteresis cycle of LSMO bilayer manganite is obtained for several temperatures T = 160, 190, 213 and 220 K. The superparamagnetic behavior has been found around the transition temperature.
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Erchidi Elyacoubi, A.S., Masrour, R., Jabar, A. et al. Electronic, Magnetic Properties and Magnetocaloric Effect of La2SrMn2O7 Bilayer Manganite: An Ab Initio calculations and Monte Carlo Study. J Low Temp Phys 203, 419–429 (2021). https://doi.org/10.1007/s10909-021-02592-w
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DOI: https://doi.org/10.1007/s10909-021-02592-w