  We investigate the magnetic nanoparticles (fluid) hyperthermia in
non-adiabatic conditions through the calorimetric method. Specifically, we
propose a theoretical approach to magnetic hyperthermia from a thermodynamic
point of view. To test the robustness of the approach, we perform hyperthermia
experiments and analyze the thermal behavior of magnetite and magnesium ferrite
magnetic nanoparticles dispersed in water submitted to an alternating magnetic
field. From our findings, besides estimating the specific loss power value from
a non-adiabatic process, thus enhancing the accuracy in the determination of
this quantity, we provide physical meaning to parameters found in literature
that still remained not fully understood, and bring to light how they can be
obtained experimentally.
