Edge Shape Effect on Switching Behavior in a Small Ferromagnetic Pattern

Jae Hyun Kwon; Hyun Cheol Koo; Hyun Jung Yi; Suk Hee Han

doi:10.4028/www.scientific.net/SSP.124-126.911

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HomeSolid State PhenomenaSolid State Phenomena Vols. 124-126Edge Shape Effect on Switching Behavior in a Small...

Edge Shape Effect on Switching Behavior in a Small Ferromagnetic Pattern

Abstract:

Switching behavior and domain structure greatly depends on the edge shape of mesoscopic patterns. In our simulation, permalloy patterns with elliptical and tapered edge need 80% and 50% more switching field, respectively, than a rectangle for the same overall aspect ratio of four. In the switching dynamics, vortex nucleation and its initial location play a great role in deciding switching field. Elliptical and tapered patterns show high magnetic remanence, which is advantageous for non-volatile device application. It is also demonstrated that small control of tapered edge makes it possible to change the switching behavior without the variation of overall aspect ratio.

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Periodical:

Solid State Phenomena (Volumes 124-126)

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911-914

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https://doi.org/10.4028/www.scientific.net/SSP.124-126.911

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Online since:

June 2007

Authors:

Jae Hyun Kwon, Hyun Cheol Koo, Hyun Jung Yi, Suk Hee Han

Keywords:

Edge Shape, Switching Behaviour, Vortex

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