| Summary: | This concise review delves into the realm of superparamagnetic nanoparticles, specifically focusing on Fe<sub>2</sub>O<sub>3</sub>, Mg<sub>1+x</sub>Fe<sub>2−2x</sub>Ti<sub>x</sub>O<sub>4</sub>, Ni<sub>1−x</sub>Cu<sub>x</sub>, and Cr<sub>x</sub>Ni<sub>1−x</sub>, along with their synthesis methods and applications in magnetic hyperthermia. Remarkable advancements have been made in controlling the size and shape of these nanoparticles, achieved through various synthesis techniques such as coprecipitation, mechanical milling, microemulsion, and sol–gel synthesis. Through this review, our objective is to present the outcomes of diverse synthesis methods, the surface treatment of superparamagnetic nanoparticles, their magnetic properties, and Curie temperature, and elucidate their impact on heating efficiency when subjected to high-frequency magnetic fields.
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