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Beyond A Phenomenological Description Of Magnetostriction

Title: Beyond A Phenomenological Description Of Magnetostriction.
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Name(s): Reid, A. H., author
Shen, X., author
Maldonado, P., author
Chase, T., author
Jal, E., author
Granitzka, P. W., author
Carva, K., author
Li, R. K., author
Li, J., author
Wu, L., author
Vecchione, T., author
Liu, T., author
Chen, Z., author
Higley, D. J., author
Hartmann, N., author
Coffee, R., author
Wu, J., author
Dakovski, G. L., author
Schlotter, W. F., author
Ohldag, H., author
Takahashi, Y. K., author
Mehta, V., author
Hellwig, O., author
Fry, A., author
Zhu, Y., author
Cao, J., author
Fullerton, E. E., author
Stohr, J., author
Oppeneer, P. M., author
Wang, X. J., author
Durr, H. A., author
Type of Resource: text
Genre: Journal Article
Text
Journal Article
Date Issued: 2018-01-26
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: Magnetostriction, the strain induced by a change in magnetization, is a universal effect in magnetic materials. Owing to the difficulty in unraveling its microscopic origin, it has been largely treated phenomenologically. Here, we show how the source of magnetostriction-the underlying magnetoelastic stress-can be separated in the time domain, opening the door for an atomistic understanding. X-ray and electron diffraction are used to separate the subpicosecond spin and lattice responses of FePt nanoparticles. Following excitation with a 50-fs laser pulse, time-resolved X-ray diffraction demonstrates that magnetic order is lost within the nanoparticles with a time constant of 146 fs. Ultrafast electron diffraction reveals that this demagnetization is followed by an anisotropic, three-dimensional lattice motion. Analysis of the size, speed, and symmetry of the lattice motion, together with ab initio calculations accounting for the stresses due to electrons and phonons, allow us to reveal the magnetoelastic stress generated by demagnetization.
Identifier: FSU_libsubv1_wos_000423430900008 (IID), 10.1038/s41467-017-02730-7 (DOI)
Keywords: stress, dynamics, thin-films, alloy, gold, angular-momentum, iron, nickel
Publication Note: The publisher's version of record is available at https://doi.org/10.1038/s41467-017-02730-7
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000423430900008
Owner Institution: FSU
Is Part Of: Nature Communications.
2041-1723
Issue: vol. 9

Choose the citation style.
Reid, A. H., Shen, X., Maldonado, P., Chase, T., Jal, E., Granitzka, P. W., … Durr, H. A. (2018). Beyond A Phenomenological Description Of Magnetostriction. Nature Communications. Retrieved from http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000423430900008