Monte Carlo simulations on thin rare earth films: Preliminary data

✍ Scribed by Fabio Cinti; Alessandro Cuccoli; Angelo Rettori

• Book ID: 104078890
• Publisher: Elsevier
• Year: 2010
• Tongue: English
• Weight: 333 KB
• Volume: 7
• Category: Article
• ISSN: 1875-3892
• DOI: 10.1016/j.phpro.2010.09.042

✦ Synopsis

We present Monte Carlo simulation data about Holmium magnetic thin film structures. As well known, this rare earth shows, at transition temperature T N , a helical order in the bulk phase. In contrast with the collinear ferromagnetic or antiferromagnetic thin films, recent experimental works have proven that the transition temperature T N (n) (n being the film thickness) depends on n only by an empirical relation. In order to study the behavior of these film structures, we consider a Heisenberg model with easy-plane single ion anisotropy and seven coupling constant (J 0 in the plane and J 1 -J 6 between plane of the Ho hcp structure), obtained by experimental neutron measurements.