Spin-torque oscillator using a perpendicular polarizer with double free layers

Soo Man Seo, Kyung Jin Lee

Research output: Contribution to journalArticlepeer-review


We conducted a micromagnetic modeling study to investigate the spin torque oscillator (STO) using a perpendicular polarizer. We used an additional layer of negative anisotropy constant materials (NAM) on a conventional STO. For the NAM layer, the magnetic easy plane is parallel to the in-plane easy axis of the free layer, and inhibits the development of the out-of-plane component of the magnetization in the free layer. As a result, this new type of STO provides a high frequency limit up to 50 GHz.

Original languageEnglish
Pages (from-to)153-156
Number of pages4
JournalJournal of Magnetics
Issue number4
Publication statusPublished - 2008


  • Anisotropy
  • Negative anisotropy
  • Spin torque oscillator
  • Spin transfer torque

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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