Composition and Process Engineering using Abundant Elements for Novel Gap Permanent Magnets (A13#)

• Subject Area: Synthesis and Properties of Functional Materials
• Term: since 2025
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 405553726

A13 (Tozman) aims to develop a thermally stable gap permanent magnet by stabilizing the metastable 3:29 phase in Sm₃Fe₂₉₋ₓMₓ with minimal dopants elements (M = Cr, V, Mo, Ti) to maximize magnetization. Element-specific spectroscopy (A03, A12, B05) and magnetic/structural characterization (A08, Z01, Z02), along with thermodynamic calculations (A08), will evaluate the effect of dopants to meet the target intrinsic magnetic properties (A01, A02) of anisotropy field > 5 T, magnetization > 0.8 T, and Curie temperature > 550 K. Strategies from phase decomposition, machine learning for rapid material development (B13), and optimizing processing conditions will be used to develop high coercivity.

• DFG Programme: CRC/Transregios
• Subproject of: TRR 270: Hysteresis Design of Magnetic Materials for Efficient Energy Conversion: HoMMage
• Applicant Institution: Technische Universität Darmstadt
• Project Head: Dr. Pelin Tozman, Ph.D.