Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MA: Fachverband Magnetismus

MA 2: Magnetic Materials I

MA 2.4: Vortrag

Montag, 7. März 2016, 10:15–10:30, H31

Magnetic properties of hard magnetic (Fe,Cr)₃Sn₂ intermetallic compounds — •Dagmar Goll, Ralf Loeffler, Johannes Herbst, Christoph Frey, Susanne Goeb, Tvtrko Grubesa, Dominic Hohs, Andreas Kopp, Ulrich Pflanz, Roland Stein, and Gerhard Schneider — Aalen University, Materials Research Institute (IMFAA), Aalen, Germany

Novel magnetic materials filling the wide-open gap between cost-efficient hard ferrites and expensive high-performance Fe-Nd-B are desirable for efficient energy converters. By experimental bulk high-throughput screening Fe-Sn-X, rare earth free (Fe,Cr)₃Sn₂ with high potential as new hard magnetic compound has been discovered. For fabricating the compound in large amounts, a cycle procedure (grinding-pelletizing-annealing) has been used. By quantitative microscopy and magnetometry promising intrinsic magnetic properties J_S ≈ 0.9 T (saturation polarization), K₁ ≈ 1.7 MJ/m³ (anisotropy constant and T_C ≈ 612 K (Curie temperature) have been found with K₁ increasing with temperature. According to X-ray diffraction the crystal structure of (Fe,Cr)₃Sn₂ is modified compared to Fe₃Sn₂ (project supported by BMBF).