Nanometers-thick self-organized Fe stripes: bridging the gap between surfaces and magnetic materials

Olivier Fruchart (1) , Mustafa Eleoui (2) , Jan Vogel (1) , Pierre-Olivier Jubert (3) , Andrea Locatelli (4) , A. Ballestrazzi (4)

1 NEEL - MNM - Micro et NanoMagnétisme
2 LLN - Laboratoire Louis Néel
3 IBM Zurich Research Laboratory
4 ELETTRA - ELETTRA

We have fabricated 5nm-high Fe(110) stripes by self-organized (SO) growth on a slightlyvicinal R(110)/Al2O3(11-20) surface, with R=Mo, W. Remanence, coercivity and domainpatterns were observed at room temperature (RT). This contrasts with conventional SO epitaxialsystems, that are superparamagnetic or even non-magnetic at RT due to their flatness. Ourprocess should help to overcome superparamagnetism without compromise on the lateral size if SOsystems are ever to be used in applications.

Mots clés: Self-organization; Superparamagnetism; Magnetism; Stripe; PEEM; Epitaxy; Iron; Molybdenum; Tungsten

Domaines: Autre [cond-mat.other]; Science des matériaux [cond-mat.mtrl-sci]; Systèmes mésoscopiques et effet Hall quantique [cond-mat.mes-hall]

Olivier Fruchart, Mustafa Eleoui, Jan Vogel, Pierre-Olivier Jubert, Andrea Locatelli, et al.. Nanometers-thick self-organized Fe stripes: bridging the gap between surfaces and magnetic materials. 2003. ⟨hal-00000652v1⟩