Scholarlink

<p>Nanostructures of Ni–Fe-Pb were synthesized using the sol–gel technique, with a focus on controlling parameters such as annealing temperature and citric acid mass, while maintaining inert argon conditions. Enhanced characteristics were observed in samples prepared with a citric acid mass of 0.888 g and an annealing temperature of 900 °C, due to an increase in thermal reduction resulting from the formation of a FeNi alloy and depressurization of surface spin disorder. The changes in the composition of the samples were confirmed, ranging from oxides to a dominant alloy phase, with particles coarsening to 300 nm. Analytical X-ray diffraction and electron microscopy confirmed these phase changes. The particles exhibited multi-domain behavior. The material achieved a high Curie temperature of 624 °C, demonstrating excellent thermal stability. The results of this study highlight how synthesis chemistry and subsequent thermal treatments can be used to design high-performance magnetic nanomaterials with tailored phase compositions.</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

The drastic increase in the magnetic properties of Ni–Fe-Pb nanostructures synthesized via the sol–gel method under an argon gas atmosphere

  • 期刊论文

  • 发表日期：

    2026年2月2日

查看全文
  • S. E. Mousavi Ghahfarokhi,
  • Kh. Helfi,
  • M. Gharibpoor

摘要

Nanostructures of Ni–Fe-Pb were synthesized using the sol–gel technique, with a focus on controlling parameters such as annealing temperature and citric acid mass, while maintaining inert argon conditions. Enhanced characteristics were observed in samples prepared with a citric acid mass of 0.888 g and an annealing temperature of 900 °C, due to an increase in thermal reduction resulting from the formation of a FeNi alloy and depressurization of surface spin disorder. The changes in the composition of the samples were confirmed, ranging from oxides to a dominant alloy phase, with particles coarsening to 300 nm. Analytical X-ray diffraction and electron microscopy confirmed these phase changes. The particles exhibited multi-domain behavior. The material achieved a high Curie temperature of 624 °C, demonstrating excellent thermal stability. The results of this study highlight how synthesis chemistry and subsequent thermal treatments can be used to design high-performance magnetic nanomaterials with tailored phase compositions.