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

Research output: Contribution to journalArticlepeer-review

6 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 languageEnglish
Article number052501
JournalApplied Physics Letters
Volume94
Issue number5
DOIs
Publication statusPublished - 16 Feb 2009

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