  Uniaxially (Z-axis) anisotropic Heisenberg ferromagnet, in presence of time
dependent (but uniform over space) magnetic field, is studied by Monte Carlo
simulation. The time dependent magnetic field was taken as elliptically
polarised where the resultant field vector rotates in X-Z plane. The system is
cooled (in presence of the elliptically polarised magnetic field) from high
temperature. As the temperature decreases, it was found that in the low
anisotropy limit the system undergoes three successive dynamical phase
transitions. These three dynamic transitions were confirmed by studying the
temperature variation of dynamic 'specific heat'. The temperature variation of
dynamic 'specific heat' shows three peaks indicating three dynamic transition
points.
