Magnetic hysteresis mechanism in Lu0.90Sr0.10Cr0.50Fe0.50O3 studied by Monte Carlo simulations

FLORENCIA LURGO; RODOLFO SANCHEZ; RAÚL CARBONIO; ORLANDO BILLONI

Dallas, TX

Congreso; 68th Annual Conference on Magnetism and Magnetic Materials; 2023

IEEE Magnetic Society

In this work we report magnetic properties of the orthorhombic perovskite Lu0.90Sr0.10Cr0.50Fe0.50O3 synthesized by a wet chemical method. As in LuCr0.5Fe0.5O3 the compound with Sr shows the magnetization reversal phenomenon, but the magnetic order occurs at high temperatures and the temperature of compensation increases. Interestingly, in M vs H curves a hysteresis loop is observed when Cr4+ and Cr3+ ions coexist in B sites of the perovskite with Sr. To explain this behavior, we performed a numerical simulation in a magnetic model of Lu1-xSrxCr0.5Fe0.5O3 perovskites with x=0 and x=0.1. We found that the ferromagnetic coupling of Fe3+ and Cr4+ through double exchange interactions increases the magnetization at high fields and that the hysteretic behavior found in simulations might be due to the coupling of the Cr4+ magnetic moments with the applied field, which induces a reorientation of the spins of the B lattice [1].