Multibits magnetic recording using a ferromagnetic element with shifted vortex core position

Hong Guang Piao; Dede Djuhana; Suhk Kun Oh; Seong Cho Yu; Dong Hyun Kim

doi:10.1063/1.3077024

Multibits magnetic recording using a ferromagnetic element with shifted vortex core position

Hong Guang Piao, Dede Djuhana, Suhk Kun Oh, Seong Cho Yu, Dong Hyun Kim

Department of Physics

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

We suggest a patterned ferromagnetic multibits element for an ultrahigh density magnetic recording media. The pattern is composed of a circular ferromagnetic disk in contact to four needle-shaped sharp equilateral triangles. By using micromagnetic simulation, we found that a spin configuration of circular ferromagnetic disk is modified with position of magnetic vortex core shifted from the center by selecting a specific combination of spin states of four needles. We explore the possibility of multibits recording by shifting magnetic vortex core position in the ferromagnetic element.

Original language	English
Article number	052501
Journal	Applied Physics Letters
Volume	94
Issue number	5
DOIs	https://doi.org/10.1063/1.3077024
Publication status	Published - 2009

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10.1063/1.3077024

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abstract = "We suggest a patterned ferromagnetic multibits element for an ultrahigh density magnetic recording media. The pattern is composed of a circular ferromagnetic disk in contact to four needle-shaped sharp equilateral triangles. By using micromagnetic simulation, we found that a spin configuration of circular ferromagnetic disk is modified with position of magnetic vortex core shifted from the center by selecting a specific combination of spin states of four needles. We explore the possibility of multibits recording by shifting magnetic vortex core position in the ferromagnetic element.",

author = "Piao, {Hong Guang} and Dede Djuhana and Oh, {Suhk Kun} and Yu, {Seong Cho} and Kim, {Dong Hyun}",

note = "Funding Information: This work was supported by the Korea Research Foundation Grant funded by the Korean Government (Grant No. KRF-2007-331-C00097).",

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AU - Piao, Hong Guang

AU - Djuhana, Dede

AU - Oh, Suhk Kun

AU - Yu, Seong Cho

AU - Kim, Dong Hyun

N1 - Funding Information: This work was supported by the Korea Research Foundation Grant funded by the Korean Government (Grant No. KRF-2007-331-C00097).

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AB - We suggest a patterned ferromagnetic multibits element for an ultrahigh density magnetic recording media. The pattern is composed of a circular ferromagnetic disk in contact to four needle-shaped sharp equilateral triangles. By using micromagnetic simulation, we found that a spin configuration of circular ferromagnetic disk is modified with position of magnetic vortex core shifted from the center by selecting a specific combination of spin states of four needles. We explore the possibility of multibits recording by shifting magnetic vortex core position in the ferromagnetic element.

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JO - Applied Physics Letters

JF - Applied Physics Letters

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Multibits magnetic recording using a ferromagnetic element with shifted vortex core position

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