Permanent magnets by nanoscale phase decomposition (A01)

• Subject Area: Synthesis and Properties of Functional Materials
• Term: since 2020
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 405553726

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.

• DFG Programme: CRC/Transregios
• Subproject of: TRR 270: Hysteresis Design of Magnetic Materials for Efficient Energy Conversion: HoMMage
• Major Instrumentation: Closed-cycle cryostat
• Applicant Institution: Technische Universität Darmstadt
• Project Head: Professor Dr. Oliver Gutfleisch