Dynamic Phase Transitions In The Spin-1/2 Metamagnetic Ising System Within The Effective-Field Theory

The dynamic behavior of a spin-1/2 metamagnetic Ising model on a honeycomb lattice under a time-varying magnetic field is studied by using the effective-field theory with correlations. The set of effective-field dynamic equations is derived by employing the Glauber transition rates. The phases in the system are obtained by solving these dynamic equations. The thermal behavior of the dynamic staggered magnetization is investigated in order to characterize the nature (continuous or discontinuous) of the dynamic transitions and to obtain dynamic phase transition temperatures. The dynamic phase diagram are constructed in the (h(0)/vertical bar J'vertical bar, k(B)T/vertical bar J'vertical bar) plane. The phase diagram exhibits a dynamic tricritical behavior.