Synthesis and Magnetic Properties of LiFeO2 Powders by a Sol-Gel Method

Ordered LiFeO₂ powders were prepared by the sol-gel method. The crystal structures were measured by X-ray diffraction (XRD). Thermal analysis such as thermogravimetry analysis (TGA) and differential thermal analysis (DTA) were performed on the dried powder obtained from the LiFeO₂ precursor solution. The particle morphology of the samples was observed using a scanning electron microscope (SEM). Magnetic properties were measured using a vibrating sample magnetometer (VSM). Mossbauer spectra of ⁵⁷Fe at room temperature for LiFeO₂ powders are shown paramagnetic behavior as demonstrated by the single quadrupole doublet with zero hyperfine fields.