A comparative study of the magnetic induction heating properties of rare earth (RE = Y, La, Ce, Pr, Nd, Gd and Yb)-substituted magnesium–zinc ferrites

Rare earth (RE)-substituted magnesium–zinc ferrite (Mg0.5Zn0.5RExFe2–xO4) nanoparticles with different RE elements (Y, La, Ce, Pr, Nd, Gd and Yb) contents (x = 0–0.1) were synthesized via coprecipitation of metal hydroxides as the precursor, followed by calcination. Their crystal structures characterized X-ray diffraction (XRD) analysis, confirming that RE-substituted Mg–Zn ferrites had a single-phase spinel structure at low x values. However, Ce-substituted contained CeO2 byproduct. Scanning electron microscopy (SEM) showed particle diameters samples decreased from approximately 100 to 20 nm was increased regardless elements. The magnetic induction heating properties evaluated using intrinsic loss power (ILP) determined temperature rise profiles in an alternating field amplitude frequency field. By various elements, it found increase moment ions can magnetization ferrites, resulting improvements ILP contents, except for substitutions. content due reductions crystallinity. results suggest precisely control properties, are promising candidates hyperthermia applications.