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自1983年Sagawa等人研制成功Nd-Fe-B永磁体,开拓了第三代稀土永磁材料磁性研究的新领域之后,国内外对R_2Fe_(14)B系列及其相应的取代化合物的结构和磁性方面进行了广泛的研究,其中相当大量的工作是集中在如何改善和提高这类永磁材料的居里温度。本工作主要使用穆斯堡尔效应方法研究不同Co含量的Pr_(12.5)(Fe_(1-x)Co_x)B_6金属间化物,确定其磁性能的变化和相应的微观机制。
Since 1983, Sagawa et al successfully developed Nd-Fe-B permanent magnet, open up the third generation of rare earth permanent magnet magnetic field of new research, the domestic and foreign R 2 Fe_ (14) B series and its corresponding substituted compound structure and Magnetism has been extensively studied, with a considerable amount of work focusing on how to improve and increase the Curie temperature of such permanent magnetic materials. The main work of this work is to study the intermetallics Pr_ (12.5) (Fe_ (1-x) Co_x) B_6 with different Co contents by using the Mossbauer effect method to determine the change of magnetic properties and the corresponding microscopic mechanism.