稀土-过渡金属二元非晶态合金中的磁性能和交换作用研究

The interaction between the rare earth (RE) and transition metal (TM) plays a dominant role in the magnetic properties and magnetic phase transition temperature of the RE-TM-based amorphous alloys. In this project, binary RE-TM alloys with simple compositions will be employed to investigate the glass forming ability and magnetic properties. The interactions and the related Curie temperature, magnetic properties of the binary amorphous with various compositions and microstructures will be simulated by a revised MCMAG program based upon a Monte Carlo algorithm. The dependence of Curie temperatures, magnetic properties, magnetization and magnetocaloric behaviors on the composition and microstructure of the binary amorphous alloys, and the mechanism involved, will be studied systematically. The project will not only have significant academic merit, but will also have important applications potential in developing multicomponent RE-TM-based amorphous alloys with excellent magnetic properties.

稀土(RE)和过渡金属(TM)原子之间的三种交换作用，决定了RE-TM基非晶态合金的磁性能和磁相变温度。申请人拟在前期工作基础上，选择最简单的RE-TM二元合金体系，通过实验和计算模拟相结合的方法，系统研究RE-TM二元非晶合金的磁相变温度、磁性能、磁化和磁熵变行为随成分和显微结构变化的规律，并通过其中三种交换作用的变化揭示非晶态合金中磁相变和磁性能随成分和显微结构变化的微观机理。本项目不仅具有重要的基础研究价值，而且对于很多新型RE-TM基功能非晶材料的开发和应用具有指导作用。

稀土(RE)和过渡金属(TM)原子之间的三种交换作用，决定了RE-TM基非晶态合金的磁性能和磁相变温度。申请人拟在前期工作基础上，选择最简单的RE-TM二元合金体系，通过实验和计算模拟相结合的方法，系统研究RE-TM二元非晶合金的磁相变温度、磁性能、磁化和磁熵变行为随成分和显微结构变化的规律，并通过其中三种交换作用的变化揭示非晶态合金中磁相变和磁性能随成分和显微结构变化的微观机理。本项目不仅具有重要的基础研究价值，而且对于很多新型RE-TM基功能非晶材料的开发和应用具有指导作用。