Transmission Electron Microscopy Study of CoPt(001) and FePt(001) Films Formed from Epitaxial Co/Pt and Fe/Pt Multilayers

Abstract

Transmission electron microscopy was performed on epitaxial Fe/Pt and Co/Pt [001] oriented multilayers that were sputter deposited onto single crystal [001] MgO. Films were examined as-deposited and after annealing in vacuum. Before annealing, the films had a magnetic easy axis in the plane while after annealing the easy axis was out of the plane. Perpendicular anisotropies of 8×l06 erg/cm3 and 1.9×107 erg/cm3 were measured for the Fe/Pt and Co/Pt post-annealed films. Large magneto-optic Kerr rotations were also measured, 0.6° and 0.4° for the Fe/Pt and Co/Pt annealed films, respectively. Changes in the magnetic properties were a direct result of the transformation of the multilayer into c axis oriented FePt and CoPt intermetallic compounds upon annealing.

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References

  1. 1.

    C.H. Lee, R.F.C. Farrow, C.J. Lin, E.E. Marinero and C.J. Chien, Phys. Rev. B 42 11384 (1990).

    Article  Google Scholar 

  2. 2.

    R.A. McCurrie and P. Gaunt, Proc. International Conference on Magnetism, Nottingham, England, p. 780, 1964

    Google Scholar 

  3. 3.

    D. Weller, H. Brandie, G. Gorman, C.J. Lin and H. Notarys, Appl. Phys. Lett. 61 2726 (1992).

    CAS  Article  Google Scholar 

  4. 4.

    T. Katayama, T. Sugimoto, Y. Suzuki, M. Hashimoto, P.de Haan and J.C. Lodder, J. Magn. Magn. Mater. 104-107 1002 (1992).

    CAS  Article  Google Scholar 

  5. 5.

    B.M. Lairson, M.R. Visokay, E.E. Marinera, R. Sinclair and B.M. Clemens, submitted.

  6. 6.

    B.M. Lairson, M.R. Visokay, R. Sinclair and B.M. Clemens, Appl. Phys. Lett. 62 639 (1993).

    CAS  Article  Google Scholar 

  7. 7.

    B.M. Lairson, M.R. Visokay, R. Sinclair and B.M. Clemens, Appl. Phys. Lett. 61 1390 (1992).

    CAS  Article  Google Scholar 

  8. 8.

    K.H.J. Buschow, Ferromagnetic Materials Vol, 4, (Elsevier Science Publishers, 1988).

    Google Scholar 

  9. 9.

    B.M. Lairson and B.M. Clemens, submitted.

  10. 10.

    B.M. Lairson, M.R. Visokay, R. Sinclair and B.M. Clemens, J. Magn. Magn. Mater. in press (1993).

    Google Scholar 

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Correspondence to M.R. Visokay.

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Visokay, M., Lairson, B., Clemens, B. et al. Transmission Electron Microscopy Study of CoPt(001) and FePt(001) Films Formed from Epitaxial Co/Pt and Fe/Pt Multilayers. MRS Online Proceedings Library 311, 15–20 (1993). https://doi.org/10.1557/PROC-311-15

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