Berlin 2015 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 19: POSTER Ia
MA 19.43: Poster
Dienstag, 17. März 2015, 09:30–13:00, Poster A
Structural and magnetic properties of MnBi thin films grown by magnetron sputtering — •Sareh Sabet, Erwin Hildebrandt, and Lambert Alff — Institute of Materials Science, Technische Universität Darmstadt, Germany
The intermetallic compound MnBi is a promising rare-earth-free permanent magnet material. The low-temperature phase (LTP) of MnBi has attracted much attention due to its high intrinsic coercivity (Hci) with a positive temperature coefficient and a high magnetocrystalline anisotropy (HA). These properties make MnBi unique among all candidates for high-temperature applications. Thin films of LTP-MnBi were deposited onto silica glass substrates by alternating sputter deposition of Bi and Mn layers, as well as from an alloyed MnBi target with 55 at.% Mn content, followed by a subsequent annealing at different temperatures ranging from 400 to 600∘ C for 1 h. We present the structural and magnetic properties of the resulting thin films in correlation with fabrication parameters.