Switching phase diagrams of current-induced magnetization switching in asymmetric MgO-based magnetic tunnel junctions

Seung Young Park, Jae Ho Han, Se Chung Oh, Jang Eun Lee, Kyung Tae Nam, Hyun Woo Lee, Younghun Jo, Kyung Jin Lee

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We investigated the effect of the free-layer composition and the pattern size of magnetic cell on current-induced magnetization switching in asymmetric MgO-based magnetic tunnel junctions. We found that the normalized switching phase diagrams (SPDs) measured at low temperature are mostly determined by the material composition of ferromagnetic electrodes but are not much sensitive to the intrinsic energy barrier and the anisotropy field of the sample. This experimental result indicates that the normalized SPD can be used to study the fundamental characteristics of spin-transfer torque.

Original languageEnglish
Article number064008
JournalJournal of Physics D: Applied Physics
Volume44
Issue number6
DOIs
Publication statusPublished - 2011 Feb 16

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

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