Synthesis and Characterization of Iron-containing Magnetic Nanoparticles Properties

• Main Authors: Chang, Yu-Chuan, 張郁川
• Other Authors: Lin, Chun-Rong
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/kax2ha

碩士 === 國立屏東大學 === 應用物理系碩士班 === 107 === 　　To create an atmosphere without oxygen, the traditional thermal pyrolysis process needs to use argon or nitrogen, but in this work, we used 1-Hexadecylamine which it can release nitrogen in high temperature. For magnetite Fe3O4 nanoparticles, the samples were synthesized at 200°C to 380°C, and the particles sizes were 4.8 to 13.3 nm. The samples were characterized with X-ray powder diffraction (XRD), transmission electron microscope (TEM), vibrating sample magnetometer (VSM), and magnetic circular dichroism (MCD). In magneto-optical measurement, we observed the absorption bands were related to Fe 3d orbits. Further we fitted the MCD spectra with the 7-band transfer. For pyrrhotite Fe1-xS nanoparticles, the samples were synthesized at 360, 380, and 400 °C. The samples were characterized with the temperature dependence XRD and VSM measurement. The temperature dependence VSM data showed that the magnetic properties enhanced near 400 K, and decreased near 600 K