Permanent magnets by nanoscale phase decomposition (A01)

在本项目中，我们将基于AFM相界（例如6:13:1型）在（Nd,Pr） Fe-B磁体中新发现的硬化机制，与A04项目连接，在Nd-Fe-B基磁体中开发具有降低临界稀土含量的高矫顽力磁体。从单晶（含B01）实验中确定的RE-3d金属间化合物的固有性质将用于磁反转机制的微磁和原子模型（项目A05， A06, B13）。纳米晶体中磁畴壁的相互作用和传播将与相互作用域的拓扑结构和能量景观相关联（项目A06， B12, B13），以理解细颗粒矫顽力机制，挑战布朗悖论。

In this project, highly coercive magnets with reduced amounts of critical REEs will be developed by building on our newly discovered hardening mechanism in (Nd,Pr) Fe-B magnets based on AFM phase boundaries (e.g. 6:13:1-type), connecting with project A04, in Nd-Fe-B-based magnets. The intrinsic properties of RE-3d intermetallics determined from experiments on single crystals (with B01) will be used in micromagnetic and atomistic models of magnetic reversal mechanisms (projects A05, A06, B13). The interaction and propagation of magnetic domain walls in nanocrystalline will be correlated with topology and the energy landscape of interaction domains (projects A06, B12, B13), for understanding fine particle coercivity mechanisms with the ambition to challenge the Brown paradox.