Scholarlink

<p>The present study investigates the impact of Nd<sup>3+</sup> substitution on the structural, elastic, and magnetic properties of Zn<sub>0.5</sub>Ni<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub> (ZNS) nanoparticles synthesized via a low-temperature sol–gel auto-combustion route. Thermal analysis confirms that the spinel phase remains stable between 450<sup>o</sup>C and 700&#xa0;°C. X-ray diffraction (XRD) reveals a single-phase cubic structure for low doping levels, with a lattice enhanced from 8.397 to 8.410&#xa0;Å due to the larger ionic radius of Nd<sup>3+</sup> occupying the octahedral [B] sites. Infrared spectroscopy (IR) shows a significant increase in the Young’s modulus (102.91–107.03 GPa), rigidity modulus, and Debye temperature, signifying enhanced lattice stiffness and mechanical robustness. The substitution of Nd<sup>3+</sup> induces "magnetic hardening," characterized by a significant increase in coercivity (up to 716 Oe) and anisotropy constant, despite a reduction in saturation magnetization from 61 to 41&#xa0;emu/g. The obtained results suggest that that Nd-doped ZNS nanoparticles are suitable for high-frequency MEMS components and acoustic sensors, while the high-magnetization/low-coercivity samples at low doping levels (x ≤ 0.1) show promise for biomedical MRI and hyperthermia applications.</p> Graphical abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Influence of Nd doping on the structural, magnetic, and elastic properties of Zn–Ni spinel oxide nanoparticles

  • 期刊论文

  • 发表日期：

    2026年4月7日

查看全文
  • G. V. Nagesh,
  • Rajesh Babu B,
  • M. S. N. A. Prasad,
  • P. S. V. Shanmukhi,
  • K. V. Ramesh,
  • Raghavendra Vemuri,
  • V. V. V. Satyanarayana

摘要

The present study investigates the impact of Nd3+ substitution on the structural, elastic, and magnetic properties of Zn0.5Ni0.5Fe2O4 (ZNS) nanoparticles synthesized via a low-temperature sol–gel auto-combustion route. Thermal analysis confirms that the spinel phase remains stable between 450oC and 700 °C. X-ray diffraction (XRD) reveals a single-phase cubic structure for low doping levels, with a lattice enhanced from 8.397 to 8.410 Å due to the larger ionic radius of Nd3+ occupying the octahedral [B] sites. Infrared spectroscopy (IR) shows a significant increase in the Young’s modulus (102.91–107.03 GPa), rigidity modulus, and Debye temperature, signifying enhanced lattice stiffness and mechanical robustness. The substitution of Nd3+ induces "magnetic hardening," characterized by a significant increase in coercivity (up to 716 Oe) and anisotropy constant, despite a reduction in saturation magnetization from 61 to 41 emu/g. The obtained results suggest that that Nd-doped ZNS nanoparticles are suitable for high-frequency MEMS components and acoustic sensors, while the high-magnetization/low-coercivity samples at low doping levels (x ≤ 0.1) show promise for biomedical MRI and hyperthermia applications.

Graphical abstract