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Magnetorefractive Effect for Co/Ru Multilayer Film with Antiferromagnetic Interlayer Exchange Coupling
Author(s) -
SATO HARUHIKO,
SAITO SHIN,
MIZUNO SHOTA,
AKAHANE KOICHI,
UCHIDA HIRONAGA
Publication year - 2017
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.22929
Subject(s) - transmittance , antiparallel (mathematics) , materials science , condensed matter physics , antiferromagnetism , stacking , magnetization , coupling (piping) , scattering , magnetic field , optoelectronics , optics , nuclear magnetic resonance , physics , composite material , quantum mechanics
SUMMARY 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.