Magnetization reversal in Pt/Co(0.5 nm)/Pt nano-platelets patterned by focused ion beam lithography |
| |
Authors: | Adam J-P Jamet J-P Ferré J Mougin A Rohart S Weil R Bourhis E Gierak J |
| |
Affiliation: | Laboratoire de Physique des Solides, Université Paris Sud, UMR CNRS 8502, Orsay, France. |
| |
Abstract: | Arrays of ultrathin Pt/Co(0.5 nm)/Pt nano-platelets with lateral sizes ranging from 30 nm to 1 μm have been patterned by focused ion beam (FIB) lithography under a weak Ga(+) ion fluence. From polar magneto-optical Kerr microscopy it is demonstrated that nano-platelets are ferromagnetic with perpendicular anisotropy down to a size of 50 nm. The irradiation process creates a magnetically soft ring at the nano-platelet periphery in which domain nucleation is initiated at a low field. The magnetization reversal in nano-platelets can be interpreted using a confined droplet model. All of the results prove that ultimate FIB patterning is suitable for preparing discrete magnetic recording media or small magnetic memory elements and nano-devices. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|