Regensburg 2016 – scientific programme
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MA: Fachverband Magnetismus
MA 15: Magnetic Thin Films II
MA 15.7: Talk
Tuesday, March 8, 2016, 11:15–11:30, H33
Ion-beam-induced magnetic and structural phase transformation of fcc Fe thin films on different substrates — •Jonas Gloss1, Michal Horký2,3, Michael Schmid1, Michal Urbánek2,3, and Peter Varga1,3 — 1Institute of Applied Physics, Vienna University of Technology, 1040 Vienna, Austria — 2Institute of Physical Engineering, Brno University of Technology, 616 69 Brno, Czech Republic — 3CEITEC BUT, Brno University of Technology, 616 00 Brno, Czech Republic
Ultrathin fcc Fe films on Cu(100) have been studied extensively in the past for their unique capability of magnetic (non-magnetic to ferromagnetic) and structural (fcc to bcc) transformation upon ion beam irradiation [1,2]. Replacing Fe by Fe78Ni22 allows for growing metastable films up to 25 nm [3]. To facilitate applications, in the current work we use Si(100) and SrTiO3(100) substrates with a Cu buffer layer. Cu on both substrates grows epitaxially, although not layer-by-layer. On these substrates the as-grown 8-nm Fe78Ni22 films are non-magnetic and transformable. We also present magnetic nanostructures in these films written by a focused ion beam.
[1] W. Rupp, et al., Appl. Phys. Lett. 93, 063102 (2008).
[2] S. Shah Zaman, et al. J. Appl. Phys. 110, 024309 (2011).
[3] J. Gloss, et al., Appl. Phys. Lett. 103, 262405 (2013).