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Ultrafast inverse magnetostriction effect in Ni/Co ferromagnet

Abstract : Research upon femtosecond time resolved magnetic processes is part of the ultrafast optics branch known as femtomagnetism [Phys. Rev. Lett. 76, 4250 (1996)] where femtosecond laser pulses are used to switch the magnetisation of ferromagnetic materials. Another trend in modern ultrafast optics is driven by progress in picosecond ultrasonics – a well established research direction dealing with the generation of picosecond acoustic pulses by thermal expansion of acoustic transducers excited by femtosecond lasers [Phys. Rev. B 34, 4129 (1986)]. A novel concept envisioning control of magnetization in ferromagnetic materials on ultrafast timescales using acoustic pulses has been proposed very recently [Phys. Rev. Lett. 105, 117204 (2010); Phys. Rev. B 82, 104422 (2010)]. The results that will be presented combine femtomagnetism and picosecond ultrasonics in order to gain understanding on the inverse magnetostriction effect. Our experimental approach will show that by launching a picosecond phonon pulse through a ferromagnetic material it is possible to measure the phonon-spin interaction time.
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Submitted on : Monday, April 23, 2012 - 10:00:00 AM
Last modification on : Friday, June 3, 2022 - 10:32:01 AM
Long-term archiving on: : Sunday, December 18, 2016 - 12:53:14 PM


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  • HAL Id : hal-00810575, version 1


Thomas Pezeril, Vasily Temnov, Stephane Andrieu, Vitali Goussev, Thomas Hauet, et al.. Ultrafast inverse magnetostriction effect in Ni/Co ferromagnet. Acoustics 2012, Apr 2012, Nantes, France. ⟨hal-00810575⟩



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