The heating produced by magnetic nanoparticles submitted to an alternative magnetic field can be used for cancer treatement; this is called magnetic hyperthermia. We have for the first time evidenced in hyperthermia experiments a behaviour typical of the "Stoner-Wohlfarth" regime. In this regime, heating properties are maximized. The specific losses measured (1.5 mJ/g) compare to the highest of the litterature, although the nanoparticle magnetization is well the one of the bulk material.
 |
| (left) Transmission electron microscopy of the nanoparticles measured in hyperthermia. (right) Specific losses per cycle measured as a function of the magnetic field, for various frequencies. |
