Enhanced magneto-optical Kerr effects in Py/Ag/Bi trilayers

Patricia Riego, Satoshi Tomita, Kaoru Murakami, Toshiyuki Kodama, Nobuyoshi Hosoito, Hisao Yanagi, Andreas Berger

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


We study the magneto-optical (MO) response of permalloy/silver/bismuth (Py/Ag/Bi) trilayer samples in reference to a control Py film by means of spectroscopic generalized MO ellipsometry. The trilayer structures show enhanced MO Kerr amplitude values compared to optical multilayer calculations based upon the Py film reference measurements, especially in the near-infrared region. This indicates that the optical interference conditions accounted for in the model are not sufficient to explain the influence of the Ag/Bi bilayer in the structure. Instead, the local optical and MO properties of the Py layer itself must be modified by the presence of the Ag/Bi bilayer, which could be caused by enhanced effective spin-orbit coupling.

Original languageEnglish
Article number19LT01
JournalJournal of Physics D: Applied Physics
Issue number19
Publication statusPublished - 2017 Apr 19
Externally publishedYes


  • magnetic multilayer
  • magneto-optical Kerr effect
  • spectroscopic generalized magneto-optical ellipsometry
  • spinorbit coupling

ASJC Scopus subject areas

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


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