As biogenic magnetite nanoparticles encapsulated in a membrane forming magnetosomes inside magnetotactic bacteria are excellent competitors of magnetic nanoparticles obtained by chemical synthesis, their study over a wide frequency band in the upper part of radiofrequency spectrum may provide knowledge for new technological applications. On the other hand, impact of power loss production and deposition in magnetite crystals due to the magnetic component of the absorbed field is not yet studied in case of various communication devices worn near the head (case of tissues contain magnetite). In this regard a set of experiments were carried out to follow the energetic response of magnetite at hundreds-thousands of MHz.
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