Impact of Gd, Pr, Yb, and Nd doping on the magnetic properties of Mg-ferrite nanoparticles

H. Aglan, I. A. Ali, B.M. Ali, S. A. Kandil

2025Journal of Materials Science Materials in Medicine12 citationsDOI Open Access PDF

Abstract

Abstract This study aimed to synthesize MgFe 1.9 Ln 0.1 O 4 (where, Ln = Yb, Pr, Gd, and Nd) ferrite nanoparticles via the sol-gel process and investigate their structural, morphological, and magnetic properties for potential hyperthermia applications. X-ray diffraction analysis (XRD) confirmed the cubic spinel structure for all samples. Transmission electron microscopy (TEM) images revealed nanometer-scale dimensions and nearly spherical morphology. Vibrating sample magnetometer measurements (VSM) indicated superparamagnetic behavior, with decreasing saturation magnetization (Ms) observed as Ln 3+ content decreased. Specific absorption rate (SAR) analysis at 198 kHz demonstrated the influence of Ln 3+ substitution on magnetic properties. Compared to existing studies, Ln 3+ substituted (Yb, Pr, Gd, and Nd) nanoparticles demonstrate tunable magnetic properties and enhanced SAR performance, offering a more efficient design for hyperthermia treatment of solid tumors. Graphical Abstract

Topics & Concepts

Materials scienceSuperparamagnetismFerrite (magnet)Transmission electron microscopyMagnetic hyperthermiaMagnetometerNanoparticleSpinelGadoliniumDiffractionAnalytical Chemistry (journal)Nuclear magnetic resonanceDopingMagnetizationMagnetic nanoparticlesNanotechnologyComposite materialMetallurgyOptoelectronicsMagnetic fieldOpticsChromatographyChemistryPhysicsQuantum mechanicsMagnetic Properties and Synthesis of FerritesMultiferroics and related materialsElectromagnetic wave absorption materials