A study of interlayer coupling in Co/Cu multilayers

Q. Y. Jin, H. R. Zhai, Y. B. Xu, Y. Zhai, M. Lu, S. M. Zhou, J. S. Payson, G. L. Dunifer, R. Naik, G. W. Auner

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Co(22 Å)/Cu multilayers with Cu thicknesses varying from 6 to 40 Å are studied by vibrating-sample magnetometry and ferromagnetic-resonance spectroscopy (FMR). The magnetization was found to increase with decreasing Cu thickness, whereas the linewidth of the uniform mode of the FMR was found to decrease. This is attributed to the spin polarization of the Cu layers due to interlayer coupling and its effect on the lowered dimensionality of the Co layers. We also observed a peak on the high-field side of the uniform FMR mode, which we attribute to antiparallel coupling of adjacent ferromagnetic layers producing an "optical" mode.

Original languageEnglish
Pages (from-to)3971-3974
Number of pages4
JournalJournal of Applied Physics
Volume77
Issue number8
DOIs
StatePublished - 1995
Externally publishedYes

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