Detection of an infrared magnetorefractive effect from a layered Fe/MgO/Fe magnetic tunnel junction

R. T. Mennicke, R. Berryman, J. A D Matthew, S. M. Thompson, K. Yakushiji, F. Ernult, S. Mitani, Koki Takanashi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The magnetorefractive effect (MRE) has become an established technique for the contactless measurement of giant and colossal magnetoresistance and has also been extended to the study of thick granular tunnelling films. Here, the MRE is used to study the behaviour of a MgO(100)/Mg0(20 nm)/Fe(20 nm)/MgO(1.5 nm)/Fe(5 nm)/Co(3 nm)/Au(3 nm) magnetic tunnel junction patterned into square pillars of lateral dimension: 50 μm and 5 μm. A significant MRE is observed, enhanced by the presence of an absorption edge associated with MgO, although the exact origin of the effect is unclear.

Original languageEnglish
Pages (from-to)2566-2568
Number of pages3
JournalIEEE Transactions on Magnetics
Volume44
Issue number11 PART 2
DOIs
Publication statusPublished - 2008 Nov 1

Keywords

  • Infrared
  • Magnetoresistance
  • Tunnelling

ASJC Scopus subject areas

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

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    Mennicke, R. T., Berryman, R., Matthew, J. A. D., Thompson, S. M., Yakushiji, K., Ernult, F., Mitani, S., & Takanashi, K. (2008). Detection of an infrared magnetorefractive effect from a layered Fe/MgO/Fe magnetic tunnel junction. IEEE Transactions on Magnetics, 44(11 PART 2), 2566-2568. https://doi.org/10.1109/TMAG.2008.2001676