The role of polyethylene glycol on the microstructural, magnetic and specific absorption rate in thermoablation properties of Mn-Zn ferrite nanoparticles by sol–gel protocol

This work reports the synthesis of PEG_xMn_0.5Zn_0.5Fe_2-xO₄ NPs via sol–gel protocols using PEG to modify and evaluate their microstructural and magnetic properties for their potential use as thermoablation applications. The properties of the obtained samples were analyzed by XRD as a cubic spinel structure. The TEM analysis confirmed the spherical morphology of the sample with an average particles size of 15.7 ± 1.7 nm. The VSM shows the ferromagnetic nature of the samples. The self-healing ability of the sample was investigated, taking into account the physicochemical properties with the aim to determine the underlying utilization of the sample as thermoablation in hyperthermia application. The heating ability was reduced from 74 to 42 and the SAR reduced from 8.6 to 3.5 W/g to attain the Curie temperature within the therapeutic range. Based on the obtained results, the formulated PEG_xMn_0.5Zn_0.5Fe_2-xO₄ NPs can be potentially used as thermoablation in hyperthermia applications.