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Ultrafast Magnetization Reversal in DyFeCo Thin Film by Single Femtosecond Laser Pulse

  • ELECTRICAL AND MAGNETIC PROPERTIES
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Abstract—The possibility of the local all-optical magnetization reversal in a thin ferrimagnetic rare-earth—transition metal film (DeFeCo) by linearly and circularly polarized 35 fs laser pulses is demonstrated experimentally. Conditions of the exposure to unit pulse and pulse sequence without an applied external magnetic field are used. The found peculiarities of switching in DyFeCo differ substantially from the results obtained previously for rare-earth—transition metal alloys. The minimum nominal fluence for the magnetization reversal is 3 mJ/cm2.

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ACKNOWLEDGMENTS

Experimental studies were performed using the equipment of the Center of Collaborative Access UNO Elektronika of the Russian Technological University MIREA.

Funding

This study was supported by the Russian Foundation for Basic Research (project. no 18-52-53030) and by the Ministry of Education and Science of the Russian Federation (state assignments nos. 3.7500.2017/9.10 (for K.A. Brekhov), 3.1923.2017/4.6 (for S.V. Ovcharenko), and 16.4699.2017/6.7 (for E.D. Mishin with respect to the organization of investigations)).

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Authors and Affiliations

  1. Russian Technological University MIREA, 119454, Moscow, Russia

    S. V. Ovcharenko, P. O. Yakushenkov, N. A. Ilyin, K. A. Brekhov & E. D. Mishina

  2. Tver’ State University, 170100, Tver’, Russia

    E. M. Semenova

  3. Shanghai Institute of Ceramics, Chinese Academy of Sciences, 200050, Shanghai, People’s Republic of China

    A. Wu

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  1. S. V. Ovcharenko
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  2. P. O. Yakushenkov
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  3. N. A. Ilyin
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  4. K. A. Brekhov
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  5. E. M. Semenova
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  6. A. Wu
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  7. E. D. Mishina
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Correspondence to S. V. Ovcharenko.

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Translated by N. Kolchugina

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Ovcharenko, S.V., Yakushenkov, P.O., Ilyin, N.A. et al. Ultrafast Magnetization Reversal in DyFeCo Thin Film by Single Femtosecond Laser Pulse. Phys. Metals Metallogr. 120, 825–830 (2019). https://doi.org/10.1134/S0031918X19090114

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  • DOI: https://doi.org/10.1134/S0031918X19090114

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