Numerical analysis of successive ballistic rotations of magnetization caused by an application of sinusoidal magnetic fields

Yukio Nozaki, Kimihide Matsuyama

Research output: Contribution to journalArticle

9 Citations (Scopus)

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 languageEnglish
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume45
Issue number29-32
DOIs
Publication statusPublished - Aug 11 2006

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Ballistics
ballistics
numerical analysis
Numerical analysis
Magnetization
Magnetic fields
Magnetization reversal
magnetization
Magnetic domains
ballistic trajectories
magnetic fields
random access memory
Trajectories
magnetic domains
Data storage equipment
rocks
causes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

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AB - 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.

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