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Theory of induced uniaxial anisotropy in magnetic nanostructures

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Bogdanov,  A. N.
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Citation

Bogdanov, A. N., Rößler, U. K., & Müller, K. H. (2002). Theory of induced uniaxial anisotropy in magnetic nanostructures. Journal of Magnetism and Magnetic Materials, 242, 594-596. Retrieved from http://www.sciencedirect.com/science?_ob=IssueURL&_tockey=%23TOC%235312%232002%23997549999.7998%23319291%23FLA%23Volumes_242-245,_Part_1,_Pages_1-633_(April_2002)&_auth=y&view=c&_acct=C000002818&_version=1&_urlVersion=0&_userid=42421&md5=5695b55a75ec2ab606a5c9fdca59ede6.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002B-37BC-B
Abstract
A phenomenological theory of surface-induced magnetic anisotropy and corresponding micromagnetic equations to calculate equilibrium magnetic states are presented for different shapes of magnetic nanostructures embedded into nonmagnetic media (films, cylindrical dots and wires, and spherical nanoparticles). In magnetic nanowires the induced anisotropy causes a continuous reorientation transition at a critical radius from the homogeneous state to a vortex state. (C) 2002 Elsevier Science B.V. All rights reserved.