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Magnetostrictive thin films for microwave spintronics

DOI: 10.1038/srep02220 DOI Help
PMID: 23860685 PMID Help

Authors: D. Parkes (University of Nottingham) , L. R. Shelford (Diamond Light Source) , P. Wadley (University of Nottingham) , V. HolĂ˝ (Charles University in Prague) , M. Wang (University of Nottingham) , A. Hindmarch (School of Physics and Astronomy, University of Nottingham) , G. Van Der Laan (Diamond Light Source) , R. P. Campion (University of Nottingham) , K. Edmonds (University of Nottingham) , S. A. Cavill (Diamond Light Source) , A. Rushforth (University of Nottingham)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Scientific Reports , VOL 3 , PAGES 5803-5809

State: Published (Approved)
Published: July 2013

Open Access Open Access

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.

Subject Areas: Materials


Instruments: I06-Nanoscience

Added On: 12/03/2015 17:29

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