Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 400, Issue -, Pages 230-235Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2015.07.009
Keywords
Magnetic domain wall; Neel domain wall; Exchangebias; Micromagnetic simulation; Magnetic domain
Funding
- Fondazione Cariplo via Project UMANA [2013-0735]
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The control of the structure and position of magnetic domain walls is at the basis of the development of different magnetic devices and architectures. Several nanofabrication techniques have been proposed to geometrically confine and shape domain wall structures; however, a fine tuning of the position and micromagnetic configuration is hardly achieved, especially in continuous films. This work shows that, by controlling the unidirectional anisotropy of a continuous ferromagnetic film through exchange bias, domain walls whose spin arrangement is generally not favored by dipolar and exchange interactions can be created. Micromagnetic simulations reveal that the domain wall width, position and profile can be tuned by establishing an abrupt change in the direction and magnitude of the exchange bias field set in the system. (C) 2015 Elsevier B.V. All rights reserved.
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