Fabrication and characterization of microstructured magnetic tunnel junction rings

C. C. Chen, C. C. Chang, C. Y. Kuo, Lance Horng, Jong-Ching Wu

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Microstructured magnetic tunnel junction rings have been fabricated by a top-down technique combining electron beam lithography and ion milling process. Four-terminal magnetoresistance measurements and magnetic force microscopy were used to successfully explore a four-transition process within the free layer throughout the magnetization reversal. Various magnetization configurations were identified to be the onion state, vortex-pair state, vortex state, vortex-core state, and reverse onion state. In addition, the various durations of each magnetic state observed in the magnetoresistance curve can be utilized for the study of a coupling effect between the pinned layer and the free layer.

Original languageEnglish
Pages (from-to)2766-2768
Number of pages3
JournalIEEE Transactions on Magnetics
Volume42
Issue number10
DOIs
Publication statusPublished - 2006 Jan 1

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Tunnel junctions
Vortex flow
Magnetoresistance
Fabrication
Magnetic force microscopy
Magnetization reversal
Electron beam lithography
Magnetization
Ions

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

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Fabrication and characterization of microstructured magnetic tunnel junction rings. / Chen, C. C.; Chang, C. C.; Kuo, C. Y.; Horng, Lance; Wu, Jong-Ching.

In: IEEE Transactions on Magnetics, Vol. 42, No. 10, 01.01.2006, p. 2766-2768.

Research output: Contribution to journalArticle

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