Energy barriers for bit-encoding states based on 360° domain walls in ultrathin ferromagnetic nanorings
Abstract
A numerical thermal stability study of the bit-encoding states in a proposed multi-level magnetic storage element based on an ultrathin ferromagnetic nanoring is presented. The material parameters and the ring dimensions for which there are five distinct metastable magnetization configurations separated by energy barriers exceeding 50kBT at room temperature are identified. The results are obtained, using the string method for the study of rare events to locate the transition states separating the metastable states and to identify the most likely thermally activated pathways.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 10, 2015
- Source ID
- 10.1063/1.4914341
Entities
People
- C. B. Muratov
- Eric Vanden-Eijnden
- V. V. Osipov
Organizations
- Ames Research Center
- National Science Foundation Division of Mathematical Sciences
- New Jersey Institute of Technology
- New York University
- Office of Naval Research