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用穆斯堡尔谱学并配合宏观手段,研究不同工艺条件下的包钴型γ-Fe2O3磁粉以及扩样试验磁粉,将不同工艺下磁粉矫顽力的变化与微观结构联系起来。The γ-Fe2O3 magnetic powder samples with Co-doping prepared by different technological process and some other magnetic powder products were studied by means of M?ssbauer effect of 57Fe, magnetism measurements and chemical analysis. The experimental results indicate that the changes of coercivity are related to microstructure, this is shown in the M?ssbauer spectra.
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