Currently, application of nanoparticle in magnetic hyperthermia has been
increasingly researched and developed, espescially mechanisms relating heat induced
process of nanoparticles. Studies mainly use Linear Respones Theory (LRT) to
calculate Specific Loss Power (SLP). However, this theory is not always suitable in
Magnetic Induction Heating (MIH). Accordingly, application of Stoner-Wohlfarth
(SW) model is necessary. The first study of Hert related to thermal mechanism
magnetic particles being distinguised between hysteresis loss and relaxation loss.
However, this distinction was not enough to establish a full theoretical model for
accurate calculation of SLP. A recent study demonstrated the effet of hysteresis to
heat induction by using numerical simulation. Although the obtained results were
suitable the authors have not established a full theoretical model for solving the SLP
issue. Some reports showed that physical factors such as size, shape, and content
effect on the SLP value. In which, the effective anisotropy constant (Keff) and size (D)
of magnetic particle play the most important effect.Carrery et.al demonstrated that
materials with different Keff s are consistent with theory models depending on the Keff
value. Materials with high Keff is consistent with the LRT model. In constrast,
materials with low Keff is consistent with the SW model
Based on these theory models, the optimal SLP value is calculated by determining the
optimal values of Keff and D. These values depend on characteristics of nanoparticle
including content, synthesis condition and material structure. Therefore, how to select
theoretical model for calculating SLP of materials is very interesting