Effects of Co addition on magneto-transport properties of magnetic tunnel junction consisting of CoFeB or CoFeSiB free layer

Su Jung Noh, Byong Sun Chun, Young Keun Kim, Tianxing Wang

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Amorphous ferromagnetic CoFeB and CoFeSiB layers with various Co concentrations were employed as free layers of magnetic tunnel junctions (MTJs), and their magnetization switching performances were compared. Both analytical measurements and micromagnetic modeling efforts were carried out to understand the dependence of magnetization switching field (Hsw) on Co concentration. In overall, the CoFeSiB free layered MTJs showed a lower H sw compared to that of the CoFeB ones. This is due to the fact that CoFeSiB possesses a lower saturation magnetization than CoFeB and, moreover, its magnetization switching process shows coherent switching.

Original languageEnglish
Article number07D346
JournalJournal of Applied Physics
Volume109
Issue number7
DOIs
Publication statusPublished - 2011 Apr 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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