Abstract
The finite size effect power law in Cu-doped Ni thin film were investigated by probing the Curie temperature (Tc)-dependence on the NixCu1-x thin film thickness. It is found that both magnetization and Tc decreases proportional to the Cu content. Tc is directly proportional to the number of pairwise spin-spin interactions in a manifold cluster of spins according to the mean field approximation. The experiment results confirm the spin bag model built in ultrathin magnetic films previous, in which each spin interacts equally strongly with neighbors over some finite interaction length N0. Furthermore, upon varying the composition of the Ni-Cu alloys, the range of spin-spin interactions N0 decreases with increasing concentration of the Cu. Since there is little change of the band structure and conduct electron properties in NixCu1-x alloy films, this phenomenon was attributed to the decreasing of the propagation distance of conduct electrons due to the scattering by the Cu impurities. The present results indicate the ferromagnetic order in 3d metal probably delivered by the itinerant electrons.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Parkin, S.S.P.: Phys Rev Lett. 67, 3598 (1991)
Bruno, P., Chappert, C.: Phys Rev Lett. 67, 1602 (1991)
Fisher, M.E., Barber, M.N.: Phys Rev Lett. 28, 1516 (1972)
Ritchie, D.S., Fisher, M.E.: Phys Rev B. 7, 480 (1973)
Qiu, Z.Q., Pearson, J., Bader, S.D.: Phys Rev Lett. 70, 1006 (1993)
Schneider, C.M., et al.: Phys Rev Lett. 64, 1059 (1990)
Huang, F., Kief, M.T., Mankey, G.J., Willis, R.F.: Phys Rev B. 49, 3962 (1994)
Li, Y., Baberschke, K.: Phys Rev Lett. 68, 1208 (1992)
Tischer, M., Arvanitis, D., Yokoyama, T., Lederer, T., Tröger, L., Baberschke, K.: Surf Sci. 307–309, 1096 (1994)
Tjeng, L.H., Idzerda, Y.U., Rudolf, P., Sette, F., Chen, C.T.: J Magn Magn Mater. 109, 288 (1992)
Tian, C.S., et al.: Phys Rev Lett. 94, 137210 (2005)
Samuel Jiang, J., Chien, C.L.: J Appl Phys. 79, 5615 (1996)
Jiang, J.S., Davidović, D., Reich, D.H., Chien, C.L.: Phys Rev Lett. 74, 314 (1995)
Kenning, G.G., Slaughter, J.M., Cowen, J.A.: Phys Rev Lett. 59, 2596 (1987)
Zhang, R., Willis, R.F.: Phys Rev Lett. 86, 2665 (2001)
Srivastava, P., Wilhelm, F., Ney, A., Farle, M., Wende, H., Haack, N., Ceballos, G., Baberschke, K.: Phys Rev B. 58, 5701 (1998)
Wang, L., Xu, W.T., Zhao, W.L., Li, G., Huang, Y.X., Li, A.X., Liu, Y.M.: Appl Phys Lett. 116, 012405 (2020)
Willis, R.F., Bramfeld, T.S., Podalak, K.R.: J Appl Phys. 101, 09G119 (2007)
Sun, M., Ren, Q., Zhao, Y., Wang, S., Yu, J., Tang, W.: J Appl Phys. 119(14), 143904 (2016)
Wang, S., Yu, J.: J Supercond Nov Magn. 31(9), 2789–2795 (2018)
Altmann, K.N., Gilman, N., Hayoz, J., Willis, R.F., Himpsel, F.J.: Phys Rev Lett. 87, 137201 (2001)
Mott, N.F.: Proc Phys Soc. 47, 571 (1935)
Lang, X.Y., Zheng, W.T., Jiang, Q.: Phys Rev B. 73, 224444 (2006)
Wang, J., Wu, W., Zhao, F., Zhao, G.-m.: Phys Rev B. 84, 174440 (2011)
Acknowledgments
This work was financially supported by National Key R&D Program of China(2017YFA0403503), National Natural Science Foundation of China (51371007 and 11674001) and Nanjing 321 strategy (2013B01008).
Author information
Authors and Affiliations
Corresponding author
Additional information
Publisher’s note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Wang, L., Zhao, W.L., Xu, W.T. et al. Finite Size Effect in Cu-doped Ni thin Films. J Supercond Nov Magn 33, 2159–2163 (2020). https://doi.org/10.1007/s10948-020-05479-1
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10948-020-05479-1