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We studied the dynamical phase transition in kinetic Ising ferromagnet drivenby oscillating magnetic field in meanfield approximation. The meanfielddifferential equation was solved by sixth order Runge-Kutta-Felberg method. Wecalculated the transition temperature as a function of amplitude and frequencyof the oscillating field. This was plotted against field amplitude takingfrequency as a parameter. As frequency increases the phase boundary is observedto become inflated. The phase boundary shows an inflection point whichseparates the nature of the transition. On the dynamic phase boundary atricritical point (TCP) was found, which separates the nature(continuous/discontinuous) of the dynamic transition across the phase boundary.The inflection point is identified as the TCP and hence a simpler method ofdetermining the position of TCP was found. TCP was observed to shift towardshigh field for higher frequency. As frequency decreases the dynamic phaseboundary is observe to shrink. In the zero frequency limit this boundary showsa tendency to merge to the temperature variation of the coercive field.

Inflection point as a manifestation of tricritical point on the dynamic phase boundary in Ising meanfield dynamics