Physical Review Materials, volume 5, issue 9, publication number 094407
Effect of magnetic anisotropy relaxation on laser-induced magnetization precession in thin galfenol films
Gerevenkov P.I.
1
,
Kuntu D. V.
1
,
Filatov Ia.A.
1
,
Shelukhin L. A.
1
,
Wang M.
2
,
Wang M
2
,
Pattnaik D.P.
2
,
Rushforth A.W.
2
,
Rushforth A W
2
,
Publication type: Journal Article
Publication date: 2021-09-20
Journal:
Physical Review Materials
Quartile SCImago
Q1
Quartile WOS
Q3
Impact factor: 3.4
ISSN: 24759953
General Materials Science
Physics and Astronomy (miscellaneous)
Abstract
The rate and pathways of relaxation of a magnetic medium to its equilibrium following excitation with intense and short laser pulses are the key ingredients of ultrafast optical control of spins. Here we study experimentally the evolution of the magnetization and magnetic anisotropy of thin films of a ferromagnetic metal galfenol (Fe0.81Ga0.19) resulting from excitation with a femtosecond laser pulse. From the temporal evolution of the hysteresis loops we deduce that the magnetization MS and magnetic anisotropy parameters K recover within a nanosecond, and the ratio between K and MS satisfies the thermal equilibrium’s power law in the whole time range spanning from a few picoseconds to 3 nanoseconds. We further use the experimentally obtained relaxation times of MS and K to analyze the laser-induced precession and demonstrate how they contribute to its frequency evolution at the nanosecond timescale.
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Citations by publishers
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1 publication, 11.11%
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IOP Publishing
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Wiley
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1 publication, 11.11%
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- We do not take into account publications that without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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Gerevenkov P. et al. Effect of magnetic anisotropy relaxation on laser-induced magnetization precession in thin galfenol films // Physical Review Materials. 2021. Vol. 5. No. 9. 094407
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Gerevenkov P., Kuntu D. V., Filatov I., Shelukhin L. A., Wang M., Wang M., Pattnaik D., Rushforth A. W., Rushforth A., Kalashnikova A., Khokhlov N. Effect of magnetic anisotropy relaxation on laser-induced magnetization precession in thin galfenol films // Physical Review Materials. 2021. Vol. 5. No. 9. 094407
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TY - JOUR
DO - 10.1103/PhysRevMaterials.5.094407
UR - https://doi.org/10.1103%2FPhysRevMaterials.5.094407
TI - Effect of magnetic anisotropy relaxation on laser-induced magnetization precession in thin galfenol films
T2 - Physical Review Materials
AU - Gerevenkov, P.I.
AU - Kuntu, D. V.
AU - Filatov, Ia.A.
AU - Shelukhin, L. A.
AU - Wang, M
AU - Rushforth, A W
AU - Kalashnikova, A.M.
AU - Khokhlov, N.E.
AU - Pattnaik, D.P.
AU - Wang, M.
AU - Rushforth, A.W.
PY - 2021
DA - 2021/09/20 00:00:00
PB - American Physical Society (APS)
IS - 9
VL - 5
SN - 2475-9953
ER -
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@article{2021_Gerevenkov,
author = {P.I. Gerevenkov and D. V. Kuntu and Ia.A. Filatov and L. A. Shelukhin and M Wang and A W Rushforth and A.M. Kalashnikova and N.E. Khokhlov and D.P. Pattnaik and M. Wang and A.W. Rushforth},
title = {Effect of magnetic anisotropy relaxation on laser-induced magnetization precession in thin galfenol films},
journal = {Physical Review Materials},
year = {2021},
volume = {5},
publisher = {American Physical Society (APS)},
month = {sep},
url = {https://doi.org/10.1103%2FPhysRevMaterials.5.094407},
number = {9},
doi = {10.1103/PhysRevMaterials.5.094407}
}