Critical behaviors and magnetic multi-compensation points of bond dilution mixed Blume-Capel model in bimodal magnetic field

Within the effective field theory (EFT), we investigate critical behaviors and magnetic multi-compensation points of bond dilution mixed Blume-Capel model in bimodal magnetic field, for a simple cubic lattice. The tricritical point (TCP) always exists for all h/J values in T−D space, while the TCP appears in smaller or larger range of negative D/J values for T−h space. The bond dilution can depress the TCP. The influence of crystal field and bimodal magnetic field on the induced ordering phase at bond percolation threshold is revealed. The system takes on one or two novel magnetic compensation points in M−h space. The bond dilution has the effect of changing one or two magnetic compensation points. The magnetic multi-compensation points offer a new route in the field of magneto-optic recording.