Abstract
The magnetic properties of Fe grains were studied by MOssbauer spectroscopy in three different nanocomposite systems: Fe-Zr-B-Cu nanocrystalline alloys prepared from melt quenched amorphous precursors, and Fe / B and Fe / Ag multilayers prepared by vacuum evaporation. It is shown that non-equilibrium alloying plays an overwhelming role in the deviation of the value of the Fe hyperfine field in small particles and in the bulk. On the other hand, a grain boundary phase with distinct magnetic properties cannot be separated. With decreasing grain size the super-paramagnetic behaviour of the Fe grains becomes more dominant and a coexistence of ferromagnetic and superparamagnetic particles can be observed. Multilayer deposition is shown to be a flexible tool for preparing magnetically heterogeneous nanocomposite structures with narrow size distributions, offering new possibilities to study the magnetic interactions between nanosize objects.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
Zhou, X., Birringer, R., Herr, U., and Gleiter, H. (1987) X-ray diffraction studies of the structure of nanometer-sized crystalline materials, Phys. Rev. B 35, 9085–9090.
Herr, U., Jing, J., Birringer, R., Gonser, U. and H. Gleiter, H. (1987) Investigation of nano-crystalline iron materials by Mössbauer spectroscopy, Appl. Phys. Lett. 50, 472–474.
Balogh, J., Bujdosó, L., Kaptás, D., Kemény, T., Vincze, I., Sabot, S., and Beke, D.L. (2000) Mössbauer study of the interface of iron nanocrystallites, Phys. Rev. B 61, 4109–4116.
Balogh, J., Bujdosó, L., Kemény, T., Pusztai, T., Tóth, L., and Vincze, I. (1997) Diffusion amorphization and interface properties of Fe-B multilayers, Appl. Phys. A 65, 23–27.
Kemény, T., Kaptás, D., Kiss, L.F., Balogh, J., Vincze, I., Szabó, S., and Beke, D.L. (2000) Structure and magnetic properties of nanocrystalline soft ferromagnets, Hyperfine Interactions 130, 181–219.
Greneche, J. M. (2001) Local structural order in disordered systems investigated by Mossbauer spectrometry, J. Non-Cryst. Solids 287, 37–44 and references therein.
Zhang, Y., Hono, K., Inoue, A., and Sakurai, T. (1996) Partitioning of Si in a Fe87Zr7Si4B2 nanocrystalline soft magnetic alloy, Appl. Phys. Lett. 69, 2128.
Kemény, T., Kaptás, D., Balogh, J., Kiss, L.F., Pusztai, T., and Vincze, I. (1999) Microscopic study of the magnetic coupling in a nanocrystalline soft magnet, J. Phys.: Condens. Matter 11, 2841–2847.
Hernando, A., Marín, P., Vázquez, M., Barandiarán, J. M., and Herzer, G. (1998) Thermal dependence of coercitivity in soft magnetic nanocrystals, Phys. Rev. B 58, 366–370.
Altbir, D., d’Albuquerque e Castro, J., and Vargas, P. (1996) Magnetic coupling in metallic granular systems, Phys. Rev. B 54, R6823–R6826.
Czigány, Z. and Radnóczi, Gy. (1999) Columnar growth structure and evolution of wavy interface morphology in amorphous and polycrystalline multilayered thin films, Thin Solid Films 347, 133–145.
Balogh, J., Kaptás, D., Kemény, T., Kiss, L.F., Pusztai, T., and Vincze, I. (2002) Atomic and magnetic structure of the interface in multilayers, Hyperfine Interactions 141/142, 13–20.
Schurer, P. J., Celinski, Z., and Heinrich, B. (1995) Mössbauer investigation of the growth of the Fe multilayer in Fe(100)/Ag(100) structures, Phys. Rev. B 51, 2506–2514.
Mørup, S. and Tronc, E. (1994) Superparamagnetic relaxation of weakly interacting particles, Phys. Rev. Lett. 72, 3278–3281.
Vincze, I. (1978) Evaluation of complex Mössbauer spectra in amorphous and crystalline ferromagnets, Solid State Communications 25, 689–693.
Babonneau, D., Camelio, S., Girardeau, T., Jaouen, M., and Lyon, O. (2003) Grazing incidence small-angle X-ray scattering of BN-Fe and BN-Ag nanocomposite films obtained by cosputtering and multilayer deposition techniques, J. Appl. Cryst. 36, 430–434.
Bozec, D., Howson, M. A., Hickey, B. J., Shatz, S., Wiser, N., Tsymbal, E. Y., and Pettifor, D. G. (2000) Mean free path effects on the current perpendicular to the plane magnetoresistance of magnetic multilayers, Phys. Rev. Lett. 85, 1314–1317.
Balogh, J., Csontos, M., Kaptás, D., and Mihály, G. (2003) Enhanced granular magneto-resistance due to ferromagnetic layers, Solid State Communications 126, 427–429.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2005 Kluwer Academic Publishers
About this paper
Cite this paper
Balogh, J. et al. (2005). MÖssbauer Effect Study of Fe Grains in Nanocomposites. In: Idzikowski, B., Švec, P., Miglierini, M. (eds) Properties and Applications of Nanocrystalline Alloys from Amorphous Precursors. NATO Science Series, vol 184. Springer, Dordrecht. https://doi.org/10.1007/1-4020-2965-9_35
Download citation
DOI: https://doi.org/10.1007/1-4020-2965-9_35
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-2963-9
Online ISBN: 978-1-4020-2965-3
eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)