Beyond a phenomenological description of magnetostriction

A. H. Reid; X. Shen; P. Maldonado; T. Chase; E. Jal; P. W. Granitzka; K. Carva; R. K. Li; J. Li; L. Wu; T. Vecchione; T. Liu; Z. Chen; D. J. Higley; N. Hartmann; R. Coffee; J. Wu; G. L. Dakovski; W. F. Schlotter; H. Ohldag; Y. K. Takahashi; V. Mehta; O. Hellwig; A. Fry; Y. Zhu; J. Cao; E. E. Fullerton; J. Stöhr; P. M. Oppeneer; X. J. Wang; H. A. Dürr

doi:10.1038/s41467-017-02730-7

Beyond a phenomenological description of magnetostriction

A. H. Reid^*, X. Shen, P. Maldonado, T. Chase, E. Jal, P. W. Granitzka, K. Carva, R. K. Li, J. Li, L. Wu, T. Vecchione, T. Liu, Z. Chen, D. J. Higley, N. Hartmann, R. Coffee, J. Wu, G. L. Dakovski, W. F. Schlotter, H. OhldagY. K. Takahashi, V. Mehta, O. Hellwig, A. Fry, Y. Zhu, J. Cao, E. E. Fullerton, J. Stöhr, P. M. Oppeneer, X. J. Wang, H. A. Dürr

^*Corresponding author for this work

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

41 Citations (Scopus)

Abstract

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 sub-picosecond 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.

Original language	English
Article number	388
Journal	Nature communications
Volume	9
Issue number	1
DOIs	https://doi.org/10.1038/s41467-017-02730-7
Publication status	Published - 2018 Dec 1
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Biochemistry, Genetics and Molecular Biology(all)
General
Physics and Astronomy(all)

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Reid, A. H., Shen, X., Maldonado, P., Chase, T., Jal, E., Granitzka, P. W., Carva, K., Li, R. K., Li, J., Wu, L., Vecchione, T., Liu, T., Chen, Z., Higley, D. J., Hartmann, N., Coffee, R., Wu, J., Dakovski, G. L., Schlotter, W. F., ... Dürr, H. A. (2018). Beyond a phenomenological description of magnetostriction. Nature communications, 9(1), [388]. https://doi.org/10.1038/s41467-017-02730-7

Reid, AH, Shen, X, Maldonado, P, Chase, T, Jal, E, Granitzka, PW, Carva, K, Li, RK, Li, J, Wu, L, Vecchione, T, Liu, T, Chen, Z, Higley, DJ, Hartmann, N, Coffee, R, Wu, J, Dakovski, GL, Schlotter, WF, Ohldag, H, Takahashi, YK, Mehta, V, Hellwig, O, Fry, A, Zhu, Y, Cao, J, Fullerton, EE, Stöhr, J, Oppeneer, PM, Wang, XJ & Dürr, HA 2018, 'Beyond a phenomenological description of magnetostriction', Nature communications, vol. 9, no. 1, 388. https://doi.org/10.1038/s41467-017-02730-7

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title = "Beyond a phenomenological description of magnetostriction",

abstract = "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 sub-picosecond 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.",

author = "Reid, {A. H.} and X. Shen and P. Maldonado and T. Chase and E. Jal and Granitzka, {P. W.} and K. Carva and Li, {R. K.} and J. Li and L. Wu and T. Vecchione and T. Liu and Z. Chen and Higley, {D. J.} and N. Hartmann and R. Coffee and J. Wu and Dakovski, {G. L.} and Schlotter, {W. F.} and H. Ohldag and Takahashi, {Y. K.} and V. Mehta and O. Hellwig and A. Fry and Y. Zhu and J. Cao and Fullerton, {E. E.} and J. St{\"o}hr and Oppeneer, {P. M.} and Wang, {X. J.} and D{\"u}rr, {H. A.}",

note = "Funding Information: P.M, K.C., and P.M.O. acknowledge support from the Swedish Research Council (VR), the Knut and Alice Wallenberg Foundation (grant No. 2015.0060), the R{\"o}ntgen-{\AA}ng-str{\"o}m Cluster, the European Union{\textquoteright}s Horizon 2020 Research and Innovation Programme under Grant agreement No. 737709 (FEMTOTERABYTE) and the Swedish National Infrastructure for Computing (SNIC). Publisher Copyright: {\textcopyright} 2018 The Author(s).",

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doi = "10.1038/s41467-017-02730-7",

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T1 - Beyond a phenomenological description of magnetostriction

AU - Reid, A. H.

AU - Shen, X.

AU - Maldonado, P.

AU - Chase, T.

AU - Jal, E.

AU - Granitzka, P. W.

AU - Carva, K.

AU - Li, R. K.

AU - Li, J.

AU - Wu, L.

AU - Vecchione, T.

AU - Liu, T.

AU - Chen, Z.

AU - Higley, D. J.

AU - Hartmann, N.

AU - Coffee, R.

AU - Wu, J.

AU - Dakovski, G. L.

AU - Schlotter, W. F.

AU - Ohldag, H.

AU - Takahashi, Y. K.

AU - Mehta, V.

AU - Hellwig, O.

AU - Fry, A.

AU - Zhu, Y.

AU - Cao, J.

AU - Fullerton, E. E.

AU - Stöhr, J.

AU - Oppeneer, P. M.

AU - Wang, X. J.

AU - Dürr, H. A.

N1 - Funding Information: P.M, K.C., and P.M.O. acknowledge support from the Swedish Research Council (VR), the Knut and Alice Wallenberg Foundation (grant No. 2015.0060), the Röntgen-Ång-ström Cluster, the European Union’s Horizon 2020 Research and Innovation Programme under Grant agreement No. 737709 (FEMTOTERABYTE) and the Swedish National Infrastructure for Computing (SNIC). Publisher Copyright: © 2018 The Author(s).

PY - 2018/12/1

Y1 - 2018/12/1

N2 - 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 sub-picosecond 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.

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Beyond a phenomenological description of magnetostriction

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