Magnetization reversal in mixed ferrite-chromite perovskites with non magnetic cation on the A-site.
In this work, we have performed Monte Carlo simulations in a classical model for RFe1-x Cr x O3 with R  =  Y and Lu, comparing the numerical simulations with experiments and mean field calculations. In the analyzed compounds, the antisymmetric exchange or Dzyaloshinskii-Moriya (DM) interaction induced a weak ferromagnetism due to a canting of the antiferromagnetically ordered spins. This model is able to reproduce the magnetization reversal (MR) observed experimentally in a field cooling process for intermediate x values and the dependence with x of the critical temperatures. We also analyzed the conditions for the existence of MR in terms of the strength of DM interactions between Fe(3+) and Cr(3+) ions with the x values variations.
Facultad de Matemática, Astronomía, Física y Computación, Universidad Nacional de Córdoba and Instituto de Física Enrique Gaviola (IFEG-CONICET), Ciudad Universitaria, X5000HUA Córdoba, Argentina.
Orlando V
OV
Billoni
Fernando
F
Pomiro
Sergio A
SA
Cannas
Christine
C
Martin
Antoine
A
Maignan
Raul E
RE
Carbonio