期刊
APPLIED NANOSCIENCE
卷 2, 期 3, 页码 247-252出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s13204-012-0100-1
关键词
BaFe12O19; Microwave-hydrothermal method; Microwave sintering; Magnetic properties
资金
- Council of Scientific and Industrial Research (CSIR), New Delhi, India
Nanocrystalline BaFe12O19 powders were prepared by microwave-hydrothermal method at 200 degrees C/45 min. The as-synthesized powders were characterized by using X-ray diffraction (XRD), thermogravimetry (TG) and differential thermal analysis (DTA). The present powders were densified at different temperatures, i.e., 750, 850, 900 and 950 degrees C for 1 h using microwave sintering method. The phase formation andmorphology studies were carried out using XRD and field emission scanning electron microscopy (FE-SEM). The average grain sizes of the sintered samples were found to be in the range of 185-490 nm. The magnetic properties such as saturation magnetization and coercive field of sintered samples were calculated based on magnetization curves. A possible relation between the magnetic hysteresis curves and the microstructure of the sintered samples was investigated.
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