Ultrafast magnetization dynamics in thin films of L10-ordered FePt and FePd compounds: promising differences
https://doi.org/10.26907/mrsej-19503
Abstract
In the paper we report on the synthesis, structural and magnetic characterization and time-resolved polar magnetooptical Kerr effect studies of thin epitaxial films of the ordered L10-phase of FePt and FePd compounds. Time scales of the photoinduced demagnetization and magnetization recovery are found. It is shown that demagnetization of FePt and FePd films occurs on different time scales, ∼0.2 ps and ∼3 ps, respectively. This difference makes these films promising for artificial multilayer ferrimagnets with high perpendicular anisotropy suitable for all-optical fast high-capacity information storage devices.
Keywords
palladium-iron alloy,
platinum-iron alloy,
epitaxial film,
time-resolved magnetooptical Kerr effect,
perpendicular anisotropy
Supporting agencies: The work was supported by the Russian Scientific Foundation, project No. 18-12-00459. R.V.Yu. acknowledges the partial support from the subsidy allocated to Kazan Federal University to fulfill the state assignment in the sphere of scientific activities (task No. 3.7704.2017/6.7). L.R.T. acknowledges the partial support by the state assignment No. AAAA-A18-118030690040-8.
About the Authors
A. V. Petrov
Institute of Physics, Kazan Federal University
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008
M. V. Pasynkov
Institute of Physics, Kazan Federal University
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008
R. V. Yusupov
Institute of Physics, Kazan Federal University
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008
S. I. Nikitin
Institute of Physics, Kazan Federal University
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008
A. I. Gumarov
Institute of Physics, Kazan Federal University
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008
I. V. Yanilkin
Institute of Physics, Kazan Federal University
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008
A. G. Kiiamov
Institute of Physics, Kazan Federal University
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008
L. R. Tagirov
Institute of Physics, Kazan Federal University; Zavoisky Physical-Technical Institute, FRC "Kazan Scientific Center of RAS"
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008; Sibirsky Trakt 10/7, 420029 Kazan
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Review
For citations:
Petrov A.V., Pasynkov M.V., Yusupov R.V., Nikitin S.I., Gumarov A.I., Yanilkin I.V., Kiiamov A.G., Tagirov L.R. Ultrafast magnetization dynamics in thin films of L10-ordered FePt and FePd compounds: promising differences. Magnetic Resonance in Solids. 2019;21(5):19503 (8 pp.). https://doi.org/10.26907/mrsej-19503
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