Electric field control of domain wall propagation in Pt/Co/GdOx films

TitleElectric field control of domain wall propagation in Pt/Co/GdOx films
Publication TypeJournal Article
Year of Publication2012
AuthorsBauer, U, Emori, S, Beach, GSD
JournalApplied Physics Letters
Volume100
Issue19
Pagination192408
Date Published2012/05/07/
Abstract

The influence of a gate voltage on domain wall (DW) propagation is investigated in ultrathin Pt/Co/gadolinium oxide (GdOx) films with perpendicular magnetic anisotropy. The DW propagation field can be enhanced or retarded by an electric field at the Co/GdOx interface and scales linearly with gate voltage up to moderate bias levels. Higher gate voltage levels, corresponding to electric fields >0.2V/nm, produce a large irreversible change to the magnetic anisotropy that can enable nonvolatile switching of the coercivity. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4712620]