Skip to main content
Log in

Exchange bias in Ferromagnetic/Antiferromagnetic bilayer systems with varying microstructure and sequence of layer deposition

  • Physico-Chemical Principles of Materials Development
  • Published:
Inorganic Materials: Applied Research Aims and scope

Abstract

Correlations of the exchange bias and surface roughness in bilayer structures of a ferromagnetic (Ni80Fe20)/antiferromagnetic (Ir25Mn75) type (F/AF structures) with varying thickness and sequence of deposition of the AF layer are studied using the angular dependence of the resonance field of the ferromagnetic resonance (FMR). It is found that the roughness of the samples in structures with an AF layer deposited on top of an F layer (TS type) is higher than in structures with an AF layer located at the bottom (BS type). The possible causes of differences in the behavior of the exchange bias as a function of surface roughness in samples with the different location of the AF layer are discussed.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. Nogués, J. and Schuller, I.K., Exchange bias, J. Magn. Magn. Mater., 1999, vol. 192, pp. 203–232.

    Article  Google Scholar 

  2. Chechenin, N.G., Magnitnye nanostruktury i ikh primenenie (Magnetic Nanostructures and Their Application), Moscow: Grant Viktoriya, 2006.

    Google Scholar 

  3. Lederman, D., Nogués, J., and Schuller, I.K., Exchange anisotropy and the antiferromagnetic surface order parameter, Phys. Rev. B: Condens. Matter, 1997, vol. 56, pp. 2332–2335.

    Article  CAS  Google Scholar 

  4. Shen, J.X. and Kief, M.T., Exchange coupling between NiO and NiFe thin films, J. Appl. Phys., 1996, vol. 79, pp. 5008–5010.

    Article  CAS  Google Scholar 

  5. Nascimento, V.P., Passamani, E.C., Alvarenga, A.D., Pelegrini, F., Biondo, A., and Baggio Saitovitch, E., Influence of the roughness on the exchange bias effect of NiFe/FeMn/NiFe trilayers, J. Magn. Magn. Mater., 2008, vol. 320, pp. 272–274.

    Article  Google Scholar 

  6. Han, D., Zhu, J., and Judy, J.H., NiFe/NiO bilayers with high exchange coupling and low coercive fields, J. Appl. Phys., 1997, vol. 81, pp. 4996–4998.

    Article  CAS  Google Scholar 

  7. Cyrille, M.C., Kim, S., Gomez, M.E., Santamaria, J., Krishnan, K.M., and Schuller, I.K., Enhancement of perpendicular and parallel giant magnetoresistance with the number of bilayers in Fe/Cr superlattices, Phys. Rev. B: Condens. Matter Mater. Phys., 2000, vol. 62, pp. 3361–3367.

    Article  CAS  Google Scholar 

  8. Maitre, A., Ledue, D., and Patt, R., Interfacial roughness and temperature effects on exchange bias properties in coupled ferromagnetic/antiferromagnetic bilayers, J. Magn. Magn. Mater., 2012, vol. 324, pp. 403–409.

    Article  CAS  Google Scholar 

  9. Chernykh, P.N, Kulikauskas, V.S., Khomenko, E.V., Uzbyakov, A.S., and Chechenin, N.G., Study of Co-Fe-Ni soft-magnetic films by nuclear-physical methods, Fiz. Khim. Obrab. Mater., 2006, no. 2, pp. 70–73.

    Google Scholar 

  10. Chechenin, N.G., Effect of internal stray fields on the high frequency properties of magnetic thin films, Phys. Solid State, 2004, vol. 46, pp. 466–470.

    Article  Google Scholar 

  11. Khomenko, E.V., Shalygina, E.E., Polyakov, S.N., and Chechenin, N.G., Electrochemical parcipitation and properties of ferromagnetic films with thickness to 500 nm, Perspekt. Mater., 2006, no. 2, pp. 66–72.

    Google Scholar 

  12. Chechenin, N.G., Khomenko, E.V., Vainchtein, D.I., and de Hosson, J.Th.M., Nonlinearities in composition dependence of structure parameters and magnetic properties of nanocrystalline fcc/bcc-mixed Co-Ni-Fe thin films, J. Appl. Phys., 2008, vol. 103, p. 07E738.

    Article  Google Scholar 

  13. Layadi, A.A., Cain, W.C., Lee, J.-W., and Artman, J.O., Investigation of anisotropy by ferromagnetic resonance (FMR) in exchange coupled bilayer films, IEEE Trans. Magn. (MAG), 1987, vol. 23, pp. 2993–2995.

    Article  Google Scholar 

  14. Khomenko, E.V., Chechenin, N.G., Goikhman, A.Yu., and Zenkevich, A.V., Exchange bias in the IrMn/Co structures with alternative sequences of antiferromagnetic and ferromagnetic layers, JETP Lett., 2008, vol. 88, pp. 693–697.

    Article  Google Scholar 

  15. Dzhun, I.O., Dushenko, S.A., Chechenin, N.G., and Konstantinova, E.A., Temperature dependence of exchange bias in Co/FeMn-structure induced by heating and cooling in magnetic field, J. Phys.: Conf. Ser., 2011, vol. 303, p. 012103.

    Google Scholar 

  16. Kittel, Ch., On the theory of ferromagnetic resonance absorption, Phys. Rev., 1948, vol. 73, pp. 155–162.

    Article  CAS  Google Scholar 

  17. Scott, J.C., Ferromagnetic resonance studies in the bilayer system Ni0.80Fe0.20/Mn0.50Fe0.50: Exchange anisotropy, J. Appl. Phys., 1985, vol. 57, pp. 3681–3683.

    Article  CAS  Google Scholar 

  18. Ambrose, T. and Chien, C.L., Finite-size scaling in thin antiferromagnetic CoO layers, J. Appl. Phys., 1996, vol. 79, pp. 5920–5922.

    Article  CAS  Google Scholar 

  19. Ambrose, T. and Chien, C.L., Dependence of exchange coupling on antiferromagnetic layer thickness in NiFe/CoO bilayers, J. Appl. Phys., 1998, vol. 83, pp. 6822–6824.

    Article  CAS  Google Scholar 

  20. Sang, H., Du, Y.W., and Chien, C.L., Exchange coupling in Fe50Mn50/Ni81Fe19 bilayer: Dependence on antiferromagnetic layer thickness, J. Appl. Phys., 1999, vol. 85, pp. 4931–4933.

    Article  CAS  Google Scholar 

  21. Xi, H., Mountfield, K.R., and White, R.M., Ferromagnetic resonance studies of exchange biasing in Ni81Fe19/Pt10Mn90 bilayers, J. Appl. Phys., 2000, vol. 87, pp. 4367–4374.

    Article  CAS  Google Scholar 

  22. Lin, T., Tsang, C., Fontana, R.E., and Howard, J.K., Exchange-coupled NiFe-FeMn, NiFe-NiMn and NiO-NiFe films for stabilization of magnetoresistive sensors, IEEE. Trans. Magn., 1995, vol. 31, pp. 2585–2587.

    Article  CAS  Google Scholar 

  23. Fuke, H.N., Saito, K., Yoshikawa, M., Iwasaki, H., and Sahashi, M., Influence of crystal structure and oxygen content on exchange-coupling properties of IrMn-CoFe spin-valve films, J. Appl. Phys., 1999, vol. 75, pp. 3689–3682.

    Google Scholar 

  24. Van Driel, J., de Boer, F.R., Lenssen, K.-M.H., and Coehoorn, R., Exchange biasing by Ir19Mn81: Dependence on temperature, microstructure and antiferromagnetic layer thickness, J. Appl. Phys., 2000, vol. 88, pp. 975–982. doi: 10.1063/1.373764

    Article  Google Scholar 

  25. Malozemoff, A.P., Heisenberg-to-Ising crossover in a random-field model with uniaxial anisotropy, Phys. Rev. B: Condens, Matter, 1988, vol. 37, pp. 7673–7682.

    Article  Google Scholar 

  26. O’Grady. K., Fernandez-Outon. L.E., and Vallejo-Fernandez, G., A new paradigm for exchange bias in polycrystalline thin films, J. Magn. Magn. Mater., 2010, vol. 322, pp. 883–899.

    Article  Google Scholar 

  27. Vallejo-Fernandez, G., Fernandez-Outon, L.E., and O’Grady, K., Antiferromagnetic grain volume effects in metallic polycrystalline exchange bias systems, J. Phys. D: Appl. Phys., 2008, vol. 41, pp. 112001. doi: 10.1088/0022-3727/41/11/112001

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to E. I. Shanova.

Additional information

Original Russian Text © E.I. Shanova, I.O. Dzhun, N.G. Chechenin, 2013, published in Perspektivnye Materialy, 2013, No. 11, pp. 5–11.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Shanova, E.I., Dzhun, I.O. & Chechenin, N.G. Exchange bias in Ferromagnetic/Antiferromagnetic bilayer systems with varying microstructure and sequence of layer deposition. Inorg. Mater. Appl. Res. 5, 89–94 (2014). https://doi.org/10.1134/S2075113314020191

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1134/S2075113314020191

Keywords

Navigation