AVS 45th International Symposium
    Magnetic Interfaces and Nanostructures Technical Group Thursday Sessions
       Session MI-ThA

Paper MI-ThA1
Exchange Coupling in Co/Au/Co Sandwiches

Thursday, November 5, 1998, 2:00 pm, Room 324/325

Session: Structure & Magnetism of Surfaces & Interfaces
Presenter: T. Duden, Arizona State University
Authors: T. Duden, Arizona State University
E. Bauer, Arizona State University
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The evolution of the magnetic domain structure during the growth of the Co layer on top of (111)-oriented Au spacer layers deposited onto a W(110) surface is studied by spin-polarized low energy electron microscopy. Pronounced biquadratic coupling is found not only at the nodes of the bilinear coupling but generally above the spin reorientation transition in the top layer. This produces a wrinkled magnetization or magnetization waves in the top layer. The results are discussed in the light of the various mechanisms which can lead to biquadratic coupling.