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Magnetostrictive thin films for microwave spintronics

Parkes, D.E.; Shelford, L.R.; Wadley, P.; Holy, V.; Wang, M.; Hindmarch, A.T.; van der Laan, G.; Edmonds, K.W.; Campion, R.P.; Cavill, S.A.; Rushforth, A.W.

Authors

D.E. Parkes

L.R. Shelford

P. Wadley

V. Holy

M. Wang

A.T. Hindmarch

G. van der Laan

K.W. Edmonds

R.P. Campion

S.A. Cavill Stuart.Cavill@diamond.ac.uk



Abstract

Multiferroic composite materials, consisting of coupled ferromagnetic and piezoelectric phases, are of great importance in the drive towards creating faster, smaller and more energy efficient devices for information and communications technologies. Such devices require thin ferromagnetic films with large magnetostriction and narrow microwave resonance linewidths. Both properties are often degraded, compared to bulk materials, due to structural imperfections and interface effects in the thin films. We report the development of epitaxial thin films of Galfenol (Fe81Ga19) with magnetostriction as large as the best reported values for bulk material. This allows the magnetic anisotropy and microwave resonant frequency to be tuned by voltage-induced strain, with a larger magnetoelectric response and a narrower linewidth than any previously reported Galfenol thin films. The combination of these properties make epitaxial thin films excellent candidates for developing tunable devices for magnetic information storage, processing and microwave communications.

Citation

Parkes, D., Shelford, L., Wadley, P., Holy, V., Wang, M., Hindmarch, A., …Rushforth, A. (2013). Magnetostrictive thin films for microwave spintronics. Scientific Reports, 3, doi:10.1038/srep02220

Journal Article Type Article
Publication Date Jul 17, 2013
Deposit Date Apr 15, 2014
Publicly Available Date Apr 15, 2014
Journal Scientific Reports
Electronic ISSN 2045-2322
Publisher Nature Publishing Group
Peer Reviewed Peer Reviewed
Volume 3
Article Number 2220
DOI https://doi.org/10.1038/srep02220
Public URL http://eprints.nottingham.ac.uk/id/eprint/2955
Publisher URL http://www.nature.com/srep/2013/130717/srep02220/full/srep02220.html
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nd-sa/4.0

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





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