Magnetization switching by nanosecond pulse of electric current in thin ferrimagnetic film near compensation temperature
| Autor: | Yi-Ru Chiou, Ngo Trong Hai, G. A. Kichin, A. E. Tseplina, V. V. Yurlov, M. D. Davydova, Te-Ho Wu, K. A. Zvezdin, Lin-Xiu Ye, A. K. Zvezdin, Sheng-Zhe Ciou, Jong-Ching Wu, Ramesh Chandra Bhatt |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Physics and Astronomy (miscellaneous) Condensed matter physics 02 engineering and technology Nanosecond Nanosecond pulse 021001 nanoscience & nanotechnology 01 natural sciences Magnetic field Magnetization Ferrimagnetism 0103 physical sciences Thermal Electric current Electric pulse 0210 nano-technology |
| Zdroj: | Applied Physics Letters. 116:222401 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/5.0010687 |
| Popis: | We report on a theoretical study of thermal magnetization switching induced by nanosecond electric current pulse using Lagrangian formalism based on the Landau–Lifshitz–Gilbert equation. The parameters for modeling are obtained from the measurements of the anomalous Hall resistance at different probe currents. We obtain the switching diagrams, analyze how the switching rate depends on the pulse parameters and the applied magnetic field, and find the optimal set of values such as orientation of the field, electric pulse duration, and energy consumption. We find that the magnetization switching is particularly efficient near the compensation point, where a decrease in the magnetization of the rare-earth sublattices by 10% or less can lead to reversal of net magnetization. |
| Databáze: | OpenAIRE |
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