Abstract
We have studied the surface morphology, interfaces, and structure of individual Co and TiO2 films 2 to 10 nm in thickness and those of Co/TiO2 multilayers up to 100 nm in thickness. Auger depth profiling and transmission electron microscopy results show that [Co(2 nm)/TiO2(2 nm)]15, [Co(2 nm)/TiO2(4 nm)]15, and [Co(4 nm)/TiO2(4 nm)]12 structures are composed of continuous layers well adherent to one another, with sharp interfaces. The conclusion is made that such multilayer structures can be used as model systems in designing magneto-optical and spintronic devices.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Belaya kniga po nanotekhnologiyam. Antologiya (Whitebook of Nanotechnologies: An Anthology), LKI, 2008.
Stognii, A.I., Koryakin, S.V., and Novitskii, N.N., Cobalt Redistribution over the Surface of Inhomogeneous Cobalt-Copper Films, Zh. Tekh. Fiz., 2003, vol. 73, no. 4, pp. 117–123.
Ding, Y., Yao, Y.D., Wu, K.T., et al., Permittivity Modulation of Ta2O5/Co/Ta2O5 Trilayer Films, http://rm.rdo.fju.edu.tw/rdar/uploads/file/rdr/4.2report/98/98-05.pdf.
Sangaletti, L., Canova, F.F., Sepe, A., et al., Magnetism and Stability of the Co:TiO2(100) Interface Probed by X-Ray Photoemission and Ex Situ Magnetometry, Surf. Sci., 2007, vol. 601, pp. 4375–4380.
Dynnik, Yu.A., Edel’man, I.S., Morozova, T.P., et al., Faraday Effect in Co/TiO2 Films, Pis’ma Zh. Eksp. Teor. Fiz., 1997, vol. 65, no. 7, pp. 531–534.
Lutsev, L.V., Stognii, A.I., and Novitskii, N.N., Colossal Injection Magnetoresistance in Heterostructures of Gallium Arsenide and Granular Film with Cobalt Nanoinclusions, Pis’ma Zh. Eksp. Teor. Fiz., 2005, vol. 81, no. 10, pp. 636–641.
Stognii, A.I., Pashkevich, M.V., Novitskii, N.N., et al., Controlled Growth of Co Nanofilms on Si(100) by Ion-Beam Sputtering, Neorg. Mater., 2009, vol. 45, no. 11, pp. 323–1329 [Inorg. Mater. (Engl. Transl.), vol. 45, no. 11, pp. 1240–1245].
Stognii, A.I. and Novitskii, N.N., Ion-Beam System for Smoothing Oxide Surfaces, Prib. Tekh. Eksp., 2002, no. 1, pp. 153–157.
Stognii, A.I., Novitskii, N.N., and Stukalov, O.M., A Method for Measuring the Thickness of Bilayer Nanostructures, Pis’ma Zh. Tekh. Fiz., 2003, vol. 29, no. 4, pp. 39–45.
Diebold, U., The Surface Science of Titanium Dioxide, Surf. Sci. Rep., 2003, vol. 48, pp. 53–229.
Viseu, T.M.R., Almeida, B., Stchakovsky, M., et al., Optical Characterisation of Anatase: A Comparative Study of the Bulk Crystal and the Polycrystalline Thin Film, Thin Solid Films, 2001, vol. 401, pp. 216–224.
Belotelov, V.I., Bykov, D.A., Doskolovich, L.L., et al., Optical Properties of In-Plane Magnetized Perforated Metal-Dielectric Heterostructures, Fiz. Tverd. Tela (S.-Peterburg), 2009, vol. 51, no. 8, pp. 1562–1567.
Liu, F., Ding, P., Shi, W., and Wang, T., Magnetic and Optical Properties of the TiO2-Co-TiO2 Composite Films Grown by Magnetron Sputtering, Chin. J. Aeronaut., 2007, vol. 20, pp. 162–167.
Feldman, L.C. and Mayer, J.W., Fundamentals of Surface and Thin Film Analysis, New York: North Holland, 1986.
Polyakov, V.V., Polyakova, K.P., Seredkin, V.A., and Zharkov, S.M., Growth and Magneto-Optical Properties of Nanograined Co-Ti-O Films, Fiz. Tverd. Tela (S.-Peterburg), 2009, vol. 51, no. 9, pp. 1757–1760.
International Centre for Diffraction Data, PCPDFWIN, JCPDS, 1998, 2, 05-0727.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © A.I. Stognii, M.V. Pashkevich, N.N. Novitskii, A.V. Bespalov, V.A. Ketsko, F. Fettar, H. Garad, 2010, published in Neorganicheskie Materialy, 2010, Vol. 46, No. 7, pp. 811–817.
Rights and permissions
About this article
Cite this article
Stognii, A.I., Pashkevich, M.V., Novitskii, N.N. et al. Growth of single-layer and multilayer Co/TiO2 nanostructures with bulklike properties. Inorg Mater 46, 728–733 (2010). https://doi.org/10.1134/S0020168510070083
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0020168510070083