Abstract
The magnetization reversal in a single-domain magnetic particle caused by a sinusoidal hard-axis field has been numerically studied for its application to magnetic random-access memories. The switching properties are analyzed as functions of the amplitude and frequency of the sinusoidal field. A sinusoidal field with a frequency higher than the magnetization relaxation frequency can induce successive ballistic trajectories of magnetization, which causes a large rotation surmounting the hard-axis direction. By choosing an appropriate frequency, it is found that the switching current amplitude can be reduced to one-fifth that of the static Stoner condition.
Original language | English |
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Pages (from-to) | L758-L760 |
Journal | Japanese Journal of Applied Physics, Part 2: Letters |
Volume | 45 |
Issue number | 29-32 |
DOIs | |
Publication status | Published - 2006 Aug 11 |
Externally published | Yes |
Keywords
- Ferromagnetic resonance
- MRAMs
- Magnetization reversal
ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy (miscellaneous)
- Physics and Astronomy(all)