Porter, D.
(1998),
Analytical Determination of the Landau Lifshitz Gilbert (LLG) Zero-Damping Critical Switching Field, IEEE Transactions on Magnetics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=150719
(Accessed November 23, 2024)
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Analytical Determination of the Landau Lifshitz Gilbert (LLG) Zero-Damping Critical Switching Field
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Abstract
Previous numerical studies based on the Landau Lifshitz Gilbert (LLG) equation have considered the magnetization reversal of a uniaxial, single-domain particle due to an applied field pulse with a short rise time. When the LLG damping constant [alpha] z = (sin2[theta]cos[theta])/2(cos[theta]-1); hy = sin [theta] (cos[theta]-1)/2; \[theta]\[GE] 2[pi]/3. A non-parametric form is also derived. One surprising implication is that magnetization reversal may be caused by an applied field with easy axis component in the same direction as the initial magnetization (hz > 0).
Citation
IEEE Transactions on Magnetics
Volume
34
Issue
4
Pub Type
Journals
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Keywords
high-speed switching, Landau-Lifshitz dynamics, Stoner-Wohlfarth model
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Created July 1, 1998, Updated June 2, 2021