Magnetorefractive Effect for Co/Ru Multilayer Film with Antiferromagnetic Interlayer Exchange Coupling

Haruhiko Sato, Shin Saito, Shota Mizuno, Koichi Akahane, Hironaga Uchida

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The spin-dependent scattering of conduction electron in metallic magnetic multilayers was investigated to reveal the optical properties which corresponded to the magnetization state. From the measurement of magnetorefractive effect in antiferro-magnetically exchange coupled Co/Ru multilayers, it was found that (1) the transmittance varied around 1% at wavelength of 1550 nm during the parallel/antiparallel spin alignment changes, (2) as a result of number of repetition and Co thickness for the multilayers, transmittance difference between the parallel and antiparallel spin alignment states had trade-off relationship with the magnitude of transmittance, and (3) asymmetric Co/Ru/Co stacking structure brought different interlayer exchange coupling fields in each layer, which resulted in magnetic field sensitive transmittance.

Original languageEnglish
Pages (from-to)27-33
Number of pages7
JournalElectrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)
Issue number3
Publication statusPublished - 2017 Feb 1


  • Co/Ru multilayer film
  • infrared optical properties
  • magnetic multilayer with interlayer exchange coupling
  • magnetorefractive effect
  • spin-dependent scattering
  • transmission measurement under magnetic field

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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