Nanostructural, magnetic and M枚ssbauer studies of nanosized Co_{1鈭?span style='font-style: italic'>x}Zn_xFe₂O₄ synthesized by co-precipitation

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• 作者：Ibrahim Sharifi ; H. Shokrollahi ; ^{shokrollahi@sutech.ac.ir}
• 关键词：Cobalt&ndash ; zinc ferrite ; Magnetic nanoparticle ; X-ray diffraction
• 刊名：Journal of Magnetism and Magnetic Materials
• 出版年：2012
• 期刊代码：31_03048853
• 类别：ph
• 出版时间：August, 2012
• 卷：324
• 期：15
• 页码：2397-2403
• 文件大小：759 K

摘要

This work presents a systematic investigation on the structural and magnetic properties of Co_1鈭?em>xZn_xFe₂O₄ (0.5<x<0.75) nanoparticles synthesized by the chemical co-precipitation method. The X-ray diffraction analysis, the Fourier Transform Infrared (FTIR) and the Vibrating Sample Magnetometer were carried out at room temperature to study the micro-structural and magnetic properties. The X-ray measurements revealed the production of a broad single cubic phase with the crystallite size within the range of 6-10 nm. The FTIR measurements between 400 and 4000 cm^鈭? confirmed the intrinsic cation vibrations of the spinel structure. The magnetic measurements show that the saturation magnetization and coercivity decrease by increasing the zinc content. Furthermore, the results reveal that the sample with a chemical composition of Co_0.3Zn_0.7Fe₂O₄ exhibits the super-paramagnetic behavior and the Curie point of 97 掳C.