1. Kerr microscopy studies of microwave assisted switching
- Author
-
B. Leven, H. Grimm, Burkard Hillebrands, and P. Martin Pimentel
- Subjects
Materials science ,Magnetic domain ,Field (physics) ,Condensed matter physics ,Ferromagnetism ,Nucleation ,General Physics and Astronomy ,Coercivity ,Microwave ,Quasistatic process ,Magnetic field - Abstract
We study microwave assisted magnetization reversal of elliptical Ni81Fe19 thin film elements employing Kerr microscopy. A microwave field is applied along the short axis of the element and orthogonally to a quasistatic magnetic field, which is parallel to the long axis of the element. The reversal process is characterized by the formation of a complex multidomain structure. We demonstrate that the reversal process in total is compressed by applying a sufficiently high microwave field, which assists to overcome the effective energy barrier of the domain nucleation, and thus reduces the coercive field.
- Published
- 2007
- Full Text
- View/download PDF