Microwave Heating of Oxidized Iron Powders in Ferromagnetic Resonance Mode

Stolyar, S.V., Nikolaeva, E.D., Li, O.A., (...), Balaev, D.A., Iskhakov, R.S.// Inorganic Materials: Applied Research//

https://doi.org/10.1134/S2075113324700400

By the example of α-Fe₂O₃ hematite, 5Fe₂O₃⋅9H₂O ferrihydrite, and γ-Fe₂O₃ maghemite powders, a microwave-radiation-induced powder system temperature growth ΔT_max of several degrees has been measured in the ferromagnetic resonance mode at a frequency of 8.9 GHz. The powders heat up the most in the external field H coinciding with the ferromagnetic resonance field. The value of the ΔT_max effect depends on the magnetization of a powder material. The results obtained allow us to propose a new magnetic hyperthermia method for biomedical applications.