Precession-dominated reversal of synthetic antiferromagnets and synthetic ferrimagnets

The precessional dynamics of synthetic antiferromagnet and synthetic ferrimagnet structures is studied using numerical simulations. It is demonstrated that sub-nanosecond reversal of perfectly compensated disc elements (zero net moment) is possible with pulsed magnetic fields, for which the antipara...

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Bibliographic Details
Published inINTERMAG Asia 2005. Digests of the IEEE International Magnetics Conference, 2005 pp. 839 - 840
Main Authors Maufront, C., Kim, J.-V., Devolder, T., Fournel, R., Chappert, C.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2005
Subjects
Anisotropic magnetoresistance
Antiferromagnetic materials
Couplings
Ferrimagnetic materials
Magnetic anisotropy
Magnetic fields
Magnetic materials
Magnetic switching
Numerical simulation
Perpendicular magnetic anisotropy
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Summary:The precessional dynamics of synthetic antiferromagnet and synthetic ferrimagnet structures is studied using numerical simulations. It is demonstrated that sub-nanosecond reversal of perfectly compensated disc elements (zero net moment) is possible with pulsed magnetic fields, for which the antiparallel alignment of the synthetic antiferromagnet can be largely preserved during reversal. The role of material parameters, such as interlayer coupling and magnetocrystalline anisotropy, is also studied extensively to find optimum switching diagrams for the smallest pulsed fields possible, whilst satisfying the usual thermal stability criteria for data retention.
ISBN:9780780390096
0780390091
ISSN:2150-4598
2150-4601
DOI:10.1109/INTMAG.2005.1463848