Self-Controlled Hyperthermia Characteristics of ZnGdFe Nanoparticles

We report self-controlled heating temperature rising characteristics of gadolinium-substituted zinc iron ferrite magnetic nanoparticles. ZnGdFe₂O ₃ nanoparticles were synthesized chemically by a co-precipitation process for application as hyperthermia inducing agents. The structure, morphology and magnetic properties of the nanoparticles were characterized using scanning electron microscope, X-ray diffractometer, and superconducting quantum interference device. The magnetic properties investigated included Curie temperature T_c, saturation magnetization M_s, remanent magnetization M_r, coercive field H_c, and hysteresis. It was observed from the study of the synthesized ZnGd ferrite nanoparticles that addition of Gd resulted in an increase in nanoparticles system´s overall Curie temperature as well as its pyromagnetic coefficient.