Current driven magnetization reversal in microstructured spin valve with current-in-plane configuration

C. Y. Kuo, C. T. Chao, J. Y. Ou, Lance Horng, J. C. Wu, Te Ho Wu, M. Tsunoda, M. Takahashi

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Abstract

The current induced magnetization reversals on the free layer of patterned spin valve ellipse have been investigated using differential magnetoresistance (MR) measurements, in which various direct currents were superimposed to 14 μA alternating current for the MR measurements. Conventional field scanned MR minor loops and subminor loops were measured under different scan ranges of magnetic field to verify the existing metastable states. The magnetization transitions between metastable states were realized in the dc scanned MR loop, in which the resistance levels were identified in accordance with the field scanned MR loop. This phenomenon is believed to be associated with the domain wall motion pushed by the direct current.

Original languageEnglish
Article number07D118
JournalJournal of Applied Physics
Volume105
Issue number7
DOIs
Publication statusPublished - 2009 Apr 27

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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