Refraction of Spin Waves by Bifocal Surface Ferromagnetic Lens in External Magnetic Field Directed Along the Hard Axis
S.A. Reshetnyak , A.S. Berezhinskiy*
National Technical University of Ukraine “Kyiv Polytechnic Institute”, 37 Peremohy av., Kiev, 03056, Ukraine
Abstract
Behavior of spin wave propagation in ferromagnetic medium with non-uniform distribution of magnetic parameters is studied. In particular, the influence of external magnetic field, spin-wave frequency and exchange parameter on the behavior of surface spin wave propagate through inhomogeneity made in the form of lens (lens is biaxial ferromagnet placed into uniaxial ferromagnetic medium. Ferromagnets are in the homogeneous magnetic field directed along the hard axis of biaxial ferromagnet) is studied.
Keywords: Anisotropy, birefringence, ferromagnet, focal distance, spin-wave lens, surface spin wave.
Article Information
Article History:
Received Date: 15/8/2011
Revision Received Date: 7/10/2011
Acceptance Date: 8/10/2011
Electronic publication date: 29/11/2011
Collection year: 2011
© Reshetnyak and Berezhinskiy; Licensee Bentham Open.
open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (
http: //creativecommons.org/licenses/by-nc/3.0/ which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
* Address correspondence to this author at the National Technical University of Ukraine “Kyiv Polytechnic Institute”, 03056, Kiev, Ukraine; Tel: +380976036806; E-mail: berejinskiy@gmail.com
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Manuscript submitted on 15-8-2011 |
Original Manuscript |
Refraction of Spin Waves by Bifocal Surface Ferromagnetic Lens in External Magnetic Field Directed Along the Hard Axis |