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Modified co-precipitation process effects on the structural and magnetic properties of Mn- doped nickel ferrite nanoparticles
Solid State Sciences ( IF 3.5 ) Pub Date : 2020-01-01 , DOI: 10.1016/j.solidstatesciences.2019.106052
Sharareh Mirzaee , Yashar Azizian-Kalandaragh , Parisa Rahimzadeh

Abstract Manganese doped Nickel ferrites nanoparticles (NPs) have been synthesized by modified co-precipitation method for investigating the effects of adding dopant ions after formation of nucleation centers in the reaction medium. The structure and magnetic properties of the as-synthesized samples have been studied by X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FT-IR) and Vibrating sample magnetometer (VSM). The structural results showed that all the samples have cubic spinel phase with the average 21 nm crystallite size. In addition, variation of the preferred XRD peak from (311) orientation to (440) occurred because of the compressive strain in the structure which was calculated by means of Williamson-Hall method (W–H). Adding dopant ions, after nucleation, caused strain, spin canting and reduction of saturation magnetization.

中文翻译:

改性共沉淀工艺对掺锰铁氧体镍纳米粒子结构和磁性能的影响

摘要 通过改进的共沉淀法合成了锰掺杂的镍铁氧体纳米粒子 (NPs),以研究在反应介质中形成成核中心后添加掺杂离子的影响。通过 X 射线衍射 (XRD)、场发射扫描电子显微镜 (FESEM)、傅里叶变换红外光谱 (FT-IR) 和振动样品磁强计 (VSM) 研究了合成样品的结构和磁性能。结构结果表明,所有样品均具有立方尖晶石相,平均晶粒尺寸为 21 nm。此外,由于结构中的压缩应变,优选的 XRD 峰从(311)取向到(440)发生变化,这是通过威廉姆森 - 霍尔方法(W-H)计算的。添加掺杂离子,成核后,
更新日期:2020-01-01
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