Europhys. Lett.
Volume 75, Number 1, July 2006
Page(s) 167 - 173
Section Interdisciplinary physics and related areas of science and technology
Published online 07 June 2006
Europhys. Lett., 75 (1), pp. 167-173 (2006)
DOI: 10.1209/epl/i2006-10085-9

Kinetic growth of nanoclusters with perpendicular magnetic anisotropy

S. Heinrichs1, W. Dieterich1 and P. Maass2

1  Fachbereich Physik, Universität Konstanz - 78457 Konstanz, Germany
2  Institut für Physik, Technische Universität Ilmenau - 98684 Ilmenau, Germany

received 3 February 2006; accepted in final form 12 May 2006
published online 7 June 2006

The growth of binary-alloy clusters on a weakly interacting substrate through codeposition of two atomic species is studied by kinetic Monte Carlo simulation. Our model describes salient features of CoPt3 nanoclusters, as obtained recently by the molecular-beam epitaxy technique. The clusters display perpendicular magnetic anisotropy (PMA) in a temperature window of growth favorable for applications. This temperature window is found to arise from the interplay of Pt surface segregation and aspect ratio for cluster shapes. Conclusions are drawn on how to optimize growth parameters with respect to PMA.

81.15.Aa - Theory and models of film growth.
68.55.Ac - Nucleation and growth: microscopic aspects.

© EDP Sciences 2006