Synthesis of substituted M- and W-type barium ferrite nanostructured powders by stearic acid gel method

被引:34
作者
Wang, XH [1 ]
Li, D [1 ]
Lu, LD [1 ]
Wang, XH [1 ]
机构
[1] NANJING UNIV SCI & TECHNOL, MAT CHEM LAB, NANJING 210094, PEOPLES R CHINA
关键词
nanostructured; substituted barium ferrite; stearic acid gel method;
D O I
10.1016/0925-8388(95)02160-4
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A series of substituted barium ferrites of M-type, Ba(CoTi)(x)Fe12-2xO19, and W-type, BaZn2-yCoyFe16O27, were prepared as nanostructured powders using the stearic acid gel method. Well-crystallized nanocrystalline hexaferrite particles of 10-20 nm have been obtained at temperatures 650-750 degrees C lower than those of other methods. The structures and micrographs of the nanocrystalline materials were characterized by X-ray diffraction and transmission electron microscopy. The phase composition of the intermediate products during the synthesis has been investigated by differential thermal analysis, thermogravimetric analysis, IR spectroscopy and X-ray analysis.
引用
收藏
页码:45 / 48
页数:4
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