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Advances in Condensed Matter Physics
Volume 2014 (2014), Article ID 301063, 5 pages
Research Article

Micromagnetic Simulation of Domain Walls in Exchange Spring Trilayers

1China Institute of Atomic Energy, Xinzhen Street, Fangshan District, Beijing 102413, China
2Department of Physics, University of Science and Technology Beijing, No. 30 Xueyuan Road, Haidian District, Beijing 100083, China

Received 14 December 2013; Revised 6 March 2014; Accepted 7 March 2014; Published 8 May 2014

Academic Editor: Hanxing Zhu

Copyright © 2014 Zijun Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Chiral domain wall structures in ferromagnetic exchange spring soft/hard/soft and hard/soft/hard trilayers were investigated with micromagnetic simulation, which enables us to fully characterize the nucleation and growth of buried domain walls in layered ferromagnetic thin films. Simulated results show that the trilayers are both exchange coupled and presenting chiral spin structures. Detailed features of field-dependent domain walls evolution in the spring magnets are also revealed. In process of remagnetization, the spin structure of soft/hard/soft is energetically more stable than that of hard/soft/hard.