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Strain induced vortex core switching in planar magnetostrictive nanostructures

Ostler, T.A.; Cuadrado, R.; Chantrell, R.W.; Rushforth, A.W.; Cavill, S.A.

Authors

T.A. Ostler

R. Cuadrado

R.W. Chantrell

A.W. Rushforth

S.A. Cavill



Abstract

The dynamics of magnetic vortex cores is of great interest because the gyrotropic mode has applications in spin torque driven magnetic microwave oscillators, and also provides a means to flip the direction of the core for use in magnetic storage devices. Here, we propose a new means of stimulating magnetization reversal of the vortex core by applying a time-varying strain gradient to planar structures of the magnetostrictive material Fe81Ga19 (Galfenol), coupled to an underlying piezoelectric layer. Using micromagnetic simulations we have shown that the vortex core state can be deterministically reversed by electric field control of the time-dependent strain-induced anisotropy.

Journal Article Type Article
Publication Date Aug 7, 2015
Journal Physical Review Letters
Print ISSN 0031-9007
Electronic ISSN 0031-9007
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 115
Issue 6
APA6 Citation Ostler, T., Cuadrado, R., Chantrell, R., Rushforth, A., & Cavill, S. (2015). Strain induced vortex core switching in planar magnetostrictive nanostructures. Physical Review Letters, 115(6), https://doi.org/10.1103/PhysRevLett.115.067202
DOI https://doi.org/10.1103/PhysRevLett.115.067202
Publisher URL http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.115.067202
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0
Additional Information Copyright 2015 by the American Physical Society

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





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