Regensburg 2016 – scientific programme
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MA: Fachverband Magnetismus
MA 2: Magnetic Materials I
MA 2.4: Talk
Monday, March 7, 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 JS ≈ 0.9 T (saturation polarization), K1 ≈ 1.7 MJ/m3 (anisotropy constant and TC ≈ 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).