Highly stable vortex state in sub-100 nm nanomagnets

• Main Authors: Wang, Xinghua, Purnama, Indra, Sekhar, Murapaka Chandra, Lew, Wen Siang
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2013
• Online Access: https://hdl.handle.net/10356/99620; http://hdl.handle.net/10220/12614
• Institution: Nanyang Technological University

We report on the magnetization reversal process in sub-100 nm Ni80Fe20 asymmetric ring. The switching mechanism involves a stable vortex state due to the strong anisotropy imposed on the narrow arm of the ring. Experimental demonstration shows that such vortex configuration does not annihilate until...