Synthesis of Iron Oxide Nanoparticles and Evaluation of the Effect of Concentration on Magnetic Hyperthermia

The effect of ferrofluid concentration on dissolution of iron oxide nanoparticles in ethylene glycol on magnetic hyperthermia measurements was investigated Iron oxide (Magnetite) nanoparticles were synthesized by Coprecipitation method at 80°C This synthesis was carried out in air atmosphere without the presence of surfactant with 2 and 3 valent iron chloride precursors The size morphology structure and magnetic properties of the nanoparticles were studied by various analyzes Investigations showed that the nanoparticles synthesized at room temperature had a superparamagnetic characteristic Magnetic hyperthermia measurements of the samples were carried out after preparation of the corresponding ferrofluid with different concentrations in ethylene glycol medium in an alternating magnetic field with a frequency of 400 kHz and a magnetic field intensity of 400 Oe The temperature of the samples was measured over a specific time interval and their Special loss power (SLP) was calculated The results showed that SLP increased with decreasing concentration