Picosecond inverse magnetostriction in galfenol thin films

J.V. Jäger; D.R. Yakovlev; M. Bayer; A.V. Scherbakov; A.V. Akimov; T.L. Linnik; M. Wang; P. Wadley; A.W. Rushforth; V. Holy; S.A. Cavill

doi:10.1063/1.4816014

Picosecond inverse magnetostriction in galfenol thin films

J.V. Jäger, D.R. Yakovlev, M. Bayer, A.V. Scherbakov, A.V. Akimov, T.L. Linnik, M. Wang, P. Wadley, A.W. Rushforth, V. Holy, S.A. Cavill

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Coherent high-amplitude precession of the magnetization and spin waves with frequencies up to 40 GHz are generated by injecting picosecond compressive and shear acoustic pulses into nanometer-sized galfenol (FeGa ) films. The magnetization modulation is due to the picosecond inverse magnetostrictive effect. The oscillations of the magnetization measured by magneto-optical Kerr rotation last for several nanoseconds, and the maximum modulation of the in-plane effective magnetic field is as high as 40 mT. These results in combination with a comprehensive theoretical analysis show that galfenol films possess excellent properties for ultrafast magnetization control based on the picosecond inverse magnetostrictive effect.

Original language	English
Article number	032409
Journal	Applied Physics Letters
Volume	103
Issue number	3
DOIs	https://doi.org/10.1063/1.4816014
Publication status	Published - 15 Jul 2013

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title = "Picosecond inverse magnetostriction in galfenol thin films",

abstract = "Coherent high-amplitude precession of the magnetization and spin waves with frequencies up to 40 GHz are generated by injecting picosecond compressive and shear acoustic pulses into nanometer-sized galfenol (FeGa ) films. The magnetization modulation is due to the picosecond inverse magnetostrictive effect. The oscillations of the magnetization measured by magneto-optical Kerr rotation last for several nanoseconds, and the maximum modulation of the in-plane effective magnetic field is as high as 40 mT. These results in combination with a comprehensive theoretical analysis show that galfenol films possess excellent properties for ultrafast magnetization control based on the picosecond inverse magnetostrictive effect.",

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T1 - Picosecond inverse magnetostriction in galfenol thin films

AU - Jäger, J.V.

AU - Yakovlev, D.R.

AU - Bayer, M.

AU - Scherbakov, A.V.

AU - Akimov, A.V.

AU - Linnik, T.L.

AU - Wang, M.

AU - Wadley, P.

AU - Rushforth, A.W.

AU - Holy, V.

AU - Cavill, S.A.

PY - 2013/7/15

Y1 - 2013/7/15

N2 - Coherent high-amplitude precession of the magnetization and spin waves with frequencies up to 40 GHz are generated by injecting picosecond compressive and shear acoustic pulses into nanometer-sized galfenol (FeGa ) films. The magnetization modulation is due to the picosecond inverse magnetostrictive effect. The oscillations of the magnetization measured by magneto-optical Kerr rotation last for several nanoseconds, and the maximum modulation of the in-plane effective magnetic field is as high as 40 mT. These results in combination with a comprehensive theoretical analysis show that galfenol films possess excellent properties for ultrafast magnetization control based on the picosecond inverse magnetostrictive effect.

AB - Coherent high-amplitude precession of the magnetization and spin waves with frequencies up to 40 GHz are generated by injecting picosecond compressive and shear acoustic pulses into nanometer-sized galfenol (FeGa ) films. The magnetization modulation is due to the picosecond inverse magnetostrictive effect. The oscillations of the magnetization measured by magneto-optical Kerr rotation last for several nanoseconds, and the maximum modulation of the in-plane effective magnetic field is as high as 40 mT. These results in combination with a comprehensive theoretical analysis show that galfenol films possess excellent properties for ultrafast magnetization control based on the picosecond inverse magnetostrictive effect.

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JO - Applied Physics Letters

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Picosecond inverse magnetostriction in galfenol thin films

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