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<p>This study aimed to synthesize MgFe<sub>1.9</sub>Ln<sub>0.1</sub>O<sub>4</sub> (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<sup>3+</sup> content decreased. Specific absorption rate (SAR) analysis at 198 kHz demonstrated the influence of Ln<sup>3+</sup> substitution on magnetic properties. Compared to existing studies, Ln<sup>3+</sup> 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.</p> Graphical Abstract <p></p>

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

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年1月30日

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

摘要

This study aimed to synthesize MgFe1.9Ln0.1O4 (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 Ln3+ content decreased. Specific absorption rate (SAR) analysis at 198 kHz demonstrated the influence of Ln3+ substitution on magnetic properties. Compared to existing studies, Ln3+ 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