Spectroscopic Kerr investigations of CoNi/Pt multilayers

W.P. van Drent, T. Suzuki, Q. Meng, J.C. Lodder, Th.J.A. Popma

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    Abstract

    CoxNi1−x/Pt multilayers with x=0.4 and 0.5 were sputtered onto Si substrates. Magnetic and spectroscopic magneto‐optic measurements (1.4–5.2 eV) reveal a Kerr rotation up to −0.48° at about 4.5 eV for a sample with rectangular hysteresis loop, about 170 kA/m coercivity, and a Curie temperature of about 300 °C. Pt layers could be made extremely thin (2.9 Å) without loss of perpendicular anisotropy and rectangular hysteresis loop. Simulations show that the Kerr rotation peak shifts back from 4.5 to 3.9 eV with increasing number of bilayers.
    Original languageEnglish
    Pages (from-to)6190-6192
    Number of pages3
    JournalJournal of Applied Physics
    Volume79
    Issue number8
    DOIs
    Publication statusPublished - 1996

    Keywords

    • SMI-EXP: EXPERIMENTAL TECHNIQUES
    • SMI-TST: From 2006 in EWI-TST
    • TSTNE-Magnet-MOKERR: Magneto Optical Kerr Spectroscopy

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