Spivakov Aleksandr A, Huang Li-Huai, Chen Ying-Zhen, Lin Chun-Rong
Department of Applied Physics, National Pingtung University, No. 4-18 Minsheng Rd., Pingtung County, Pingtung City 90003, Taiwan.
Nanomaterials (Basel). 2023 Jul 29;13(15):2203. doi: 10.3390/nano13152203.
In the present study, Fe(CrMn)O nanoparticles (0 ≤ x ≤ 0.5) were successfully synthesized by a combustion method, and the influence of Cr substitution on the structural and magnetic properties of the obtained nanoparticles was studied by various methods. The structural analysis revealed that the sample with x = 0 has a tetragonal structure, while all Cr-doped samples crystallize into a cubic structure. Additionally, the results of TEM show that doping with chromium leads to an increase in particle size. The magnetic hysteresis loops demonstrate the behavior typical for soft magnetic materials with low coercivity and remanence magnetization. The magnetic measurements revealed that the saturation magnetization of the obtained nanoparticles demonstrates a decreasing trend with increasing Cr content. The influence of chromium doping on the observation change in saturation magnetization is discussed. Based on the results of temperature-dependent magnetization measurements, it was found that the temperature of a magnetic transition in synthesized nanoparticles depends on Cr content.
在本研究中，通过燃烧法成功合成了Fe(CrMn)O纳米颗粒（0≤x≤0.5），并采用多种方法研究了Cr替代对所得纳米颗粒结构和磁性的影响。结构分析表明，x = 0的样品具有四方结构，而所有Cr掺杂样品均结晶为立方结构。此外，透射电子显微镜（TEM）结果表明，铬掺杂导致粒径增大。磁滞回线显示出具有低矫顽力和剩余磁化强度的软磁材料的典型行为。磁性测量表明，所得纳米颗粒的饱和磁化强度随Cr含量增加呈下降趋势。讨论了铬掺杂对饱和磁化强度观测变化的影响。基于温度依赖磁化测量结果，发现合成纳米颗粒中的磁转变温度取决于Cr含量。
