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Proceedings Paper

Formation and decomposition of laser-deposited metastable Fe-Cr phases
Author(s): Andre A. Gorbunov; Alexander A. Levin; Egbert Wieser; Lothar Bischoff; Dieter Eckert; Axel Mensch; Michael Mertig; Dirk C. Meyer; Helfried Reuther; Peter Paufler; Wolfgang Pompe
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Paper Abstract

Contrary to expectations to obtain a continuous series of supersaturated b.c.c. Fe-Cr solid solutions by co-deposition of both metals in cross-beam PLD, there form unusual for this materials system metastable intermetallic phases. The structure of alloys develops from a tetragonally distorted b.c.c. at low Cr-content through a face centered orthorhombic (f.c.o.) to partly ordered primitive orthorhombic (p.o.) crystal structure of the A15-like type at nearly equiatomic composition. It seems to be the first observation of an ordering of restrictedly soluble components under the bombardment of hyperthermal species in PLD. Intriguing fact is that these metastable phases are initially paramagnetic (PM) at room temperature but become ferromagnetic (FM) after annealing in a temperature range 400-500 °C or under ion bombardment. The induced PM-FM transformation in the alloys is demonstrated to be useful for formation of stable lateral magnetic microstructures.

Paper Details

Date Published: 2 September 2003
PDF: 11 pages
Proc. SPIE 5121, Laser Processing of Advanced Materials and Laser Microtechnologies, (2 September 2003); doi: 10.1117/12.515617
Show Author Affiliations
Andre A. Gorbunov, Technische Univ. Dresden (Germany)
Alexander A. Levin, Technische Univ. Dresden (Germany)
Egbert Wieser, Forschungszentrum Rossendorf (Germany)
Lothar Bischoff, Forschungszentrum Rossendorf (Germany)
Dieter Eckert, Institut fuer Festkoerper- und Werkstofforschung e.V. (Germany)
Axel Mensch, Technische Univ. Dresden (Germany)
Michael Mertig, Technische Univ. Dresden (Germany)
Dirk C. Meyer, Technische Univ. Dresden (Germany)
Helfried Reuther, Forschungszentrum Rossendorf (Germany)
Peter Paufler, Technische Univ. Dresden (Germany)
Wolfgang Pompe, Technische Univ. Dresden (Germany)

Published in SPIE Proceedings Vol. 5121:
Laser Processing of Advanced Materials and Laser Microtechnologies
Friedrich H. Dausinger; Vitali I. Konov; Vladimir Yu. Baranov; Vladislav Ya. Panchenko, Editor(s)

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