  The deterministic Landau-Lifshitz-Gilbert equation has been used to
investigate the nonlinear dynamics of magnetization and the specific loss power
in magnetic nanoparticles with uniaxial anisotropy driven by a rotating
magnetic field. We propose a new type of applied field, which is
"simultaneously rotating and alternating", i.e. the direction of the rotating
external field changes periodically. We show that a more efficient heat
generation by magnetic nanoparticles is possible with this new type of applied
field and we suggest its possible experimental realization in cancer therapy
which requires the enhancement of loss energies.
