报告题目：A multi-phase field simulation of grain growth in SmCo polycrystal assisted by magnetic field

报告人：Dr. Liu HUO (Ruhr-Universität Bochum, Germany)

邀请人：王刚 副教授

报告时间：2024年5月15日16:00

报告地点：8号楼201会议室

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材料科学与工程学院

2024年5月13日

报告摘要：

The functional properties of sintered magnets depend critically on their microstructure. Investigating the microstructure evolution during sintering or heat treatment helps us to improve the magnetic performance. However, solving the coupling between the structural and magnetic degrees of freedom on the micrometer scale is not possible with most of the current simulation packages. Therefore, we implemented the equations needed to treat both degrees of freedom in the framework of the multi-phase field model. We verified our implementation using a magnetic vortex example. Then we applied our model to the field-assisted grain growth in Sm₂Co₁₇ polycrystal films to investigate the impact of the magnetic energy on grain growth and magnetic performance. Our model provides a solution for the microstructure evolution in ferromagnetic polycrystals.

报告人简介：

霍流，本科毕业于华南师范大学，于德国波鸿鲁尔大学取得硕士和博士学位。博士期间师从相场领域专家Ingo Steinbach教授，并获得德国马普学会钢铁研究所Surmat项目奖学金，主要的工作方向为微磁学和相场方法的建模。