Skip to main content Accessibility help

Interface and Volume Anisotropy of MBE-Grown Co/Pt (111), (110) and (001) and Sputtered CO/Pt Multilayers

  • D. Weiler (a1), R.F.C. Farrow (a1), R.F. Marks (a1), G.R. Harp (a1), H. Notarys (a1) and G. Gorman (a1)...


A quantitative determination of interface (Ks) and volume anisotropy {?ψ) constants of MBE and sputtered CO/Pt Multilayers is reported. Torque and VSM Magnetometry were used to determine the total average anisotropy and the room temperature magnetization of four different series of films with varying Co thickness and nearly constant Pt thickness. All films were characterized with X-ray diffraction and X-ray fluorescence, allowing the determination of the “Magnetic” volume with good accuracy. Both Ks and Jeff are found to be orientation dependent. We find the following results for MBE films grown on Ag buffered GaAs substrates and highly < 111 > textured films, grown on etched SiNx buffers:

(111) Ks = 0.97mJ/m2, Kveff =-0.74MJ/m3 MBE

(111) Ks = 0.92mJ/m2, Kveff =-l.lIMJ/m3 sputtered

(110) Ks = 0.42mJ/m2, Kveff =-l.95MJ/m3 MBE

(001) Ks = 0.59mJ/m2, Kveff =-5.98MJ/m3 MBE

The [110]-oriented MBE films show in addition a large (intrinsic) in-plane anisotropy constant K 0≃-3MJ/m3 which is found to be independent of the Co thickness. [100] is the easy and [110] the hard in-plane direction.



Hide All
[1] Lee, C.H., Farrow, R.F.C., Lin, C.J., Marinero, E.E., Chien, C.J., Phys. Rev. B, 42, 1990, 11384.
[2] Lee, C.H., Farrow, R.F.C., Hermsmeier, B.D., Marks, R.F., and Bennet, W.R., Lin, C.J., Marinero, E.E., Kirchner, P.D., Chien, C.J., J. Magri. Magri. Mater., 93, 1991, 592.
[3] den Broeder, F.J.A., Kuiper, D., Donkersloot, H.C., Hoving, W., Comparison of the magnetic anisotropy of (001) and (111) oriented CO/Pd Multilayers, Appl. Phys. A, 49, 1989, 507512.
[4] Engel, B.N., England, C.D., vanLeeuwen, R.A., Wiedmann, M.H., and Falco, C.M., Phsy. Rev. Lett., 67, 1991, 1910.
[5] Johnson, M.T., de Vries, J.J., McGee, N.W.E., aan de Stegge, J., and den Broeder, F.J.A., Orientational Dependence of the Interface Magnetic Anisotropy in Epitaxial Ni/Co/Ni Sandwiches, Phys. Rev. Lett., 69, 1992, 3575.
[6] Hermsmeier, B.D., Farrow, R.F.C., Lee, C.H., Marks, R.F., and Marinero, E.E., Lin, C.J., Marks, R.F., Chien, C.J., J. Appl. Phys., 69, 1991, 5646.
[7] Farrow, R.F.C., Hermsmeier, B.D., Lee, C.H., Marks, R.F. and Marinero, E.E., Lin, C.J., Chien, C.J., Hagstrom, S.B., Mat. Res. Symp. Proc., 229, 1991, 115.
[8] Yan, X., Egami, T., Marinero, E.E., Farrow, R.F.C., Lee, C.H., J. Mat. Res., 7, 1992, 1309.
[9] Chien, C.J., Clemens, B.M., Hagstrom, S.B., Farrow, R.F.C. and Lee, C.H., Marinero, E.E., Lin, C.J., Mat. Res. Soc. Proc., 231, 1991, 465.
[10] Cho, N.-H., Krishnan, Kannán M., Lucas, C.A., Farrow, R.F.C., Microstructure and magnetic anisotropy of ultrathin CO/Pt Multilayers grown on GaAs (111) by Molecular-beam epitaxy, J. Appl. Phys., 72, 1992, 57995807.
[11] Toney, M., unpublished data, 1992.
[12] Toney, M.F., Farrow, R.F.C., Marks, R.F., Harp, G., Rabedeau, T.A., Mat. Res. Soc. Symp. Proc., 263, 1992, 237.
[13] Victora, R.H. and MacLaren, J.M., Theory of anisotropy in strained superlattices, J. Appl. Phys., 73, 1993, 6415.
[14] Néel, L., J. Phys. Radium, 15, 1954, 376.
[15] Daalderop, G.H.O., Kelly, P.J., Schuurmans, M.F.H., First-principles calculations of the magnetic anisotropy energy of (Co), Phys. Rev. B, 42, 1990, 72707273.
[16] McGee, N. W. E., Johnson, M.T., de Vries, J.J., aan de Stegge, J., Localised Kerr study of the Magnetic Properties of an Ultrathin Epitaxial Co Wedge grown on Pt (111), J. Appl. Phys., 73, 1993, 3418.
[17] Suzuki, T., Notarys, H., Dobbertin, D., Lin, C.-J., Weiler, D. and Miller, D. and Gorman, G., Microstructure and magnetic properties in Co/Pt Multilayer films, IEEE Trans. Mag., 28, 1992, 2754.
[18] Weiler, D., Notarys, H., Suzuki, T., Gorman, G., Logan, T., and McFadyen, I., Chien, C.J., Thickness Dependent Coercivity in Sputtered CO/Pt Multilayers, IEEE Trans. Mag., 28, 1992, 25002502.
[19] Miyajima, H., Sato, K., Mizoguchi, T., Simple analysis of torque measurement of magnetic thin films, J. Appl. Phys., 47, 1976, 4669.
[20] Farrow, R.F.C., Lee, C.H., Marks, R.F., Harp, G., Toney, M. and Rabedeau, T.A., Weiler, D., Brandie, H., in “Magnetism and Structure in Systems of Reduced Dimensions”, NATO ASI series, eds. Farrow, R.F.C. et al., Plenum Publishing Corp., New York, 1993.
[21] Rabedeau, T.A., Harp, G.R., Marks, R.F., Farrow, R.F.C., Toney, M.F., (unpublished), 1993.
[22] Lin, C.-J., Do, H.V., Magneto-optical recording on evaporated Co/Pt Multilayer films, IEEE Trans. Magn., 26, 1990, 17001702.
[23] LeDang, K., Veillet, P., Chappert, C., Farrow, R.F.C., Marks, R.F. and Weiler, D., Orthorombic distortion of Co lattice in a (110) Co/Pt Multilayer grown on (001) GaAs substrate, Phys. Rev. B (submitted), 1993.
[24] Hillebrands, B. and Dutcher, J.R., Origin of very large in-plane anisotropies in (HO) -oriented CO/Pd and Co/Pt coherent superlattices, Phys. Rev. B / Brief Reports, 47, 1993, 6126.
[25] Hillebrands, B., Harzer, J.V., Güntherodt, G., Dutcher, J.R., Study of Co-based Multilayers by Brillouin light scattering, J. Magn. Soc Jpn., 17 Supp. S1, 1993, 1722.
[26] Ebert, H., Ruegg, S., Schütz, G., Wienke, R., Zeper, W.B., Magnetic properties of Co/Pt Multilayers, J. Magn. Magn. Mater., 93, 1991, 601604.
[27] Ebert, H., Schütz, G., Wienke, R., Ruegg, S., Wilhelm, W. and Zeper, W.B., J. Magn. Magn. Mater., 93, 1991, 601.
[28] McGuire, T.R., Aboaf, J.A., Klokholm, E., Magnetic and transport properties of Co-Pt thin films, J. Appl. Phys., 55, 1984, 1951.

Related content

Powered by UNSILO

Interface and Volume Anisotropy of MBE-Grown Co/Pt (111), (110) and (001) and Sputtered CO/Pt Multilayers

  • D. Weiler (a1), R.F.C. Farrow (a1), R.F. Marks (a1), G.R. Harp (a1), H. Notarys (a1) and G. Gorman (a1)...


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed.