Abstract
Structure-to-magnetic arrangement relationship is investigated in NANOPERM- type Fe76Mo8Cu1B15 metallic ribbons prepared by planar flow casting. Its particular composition proved to be suitable for model case studies of the complexity of magnetic interactions frequently observed in nanocrystalline alloys. As-quenched as well as annealed samples are characterized by Mössbauer spectroscopy, transmission electron microscopy (TEM), high resolution TEM, X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The Curie temperature of the as-quenched alloy is about 40†C. As a consequence, Mössbauer spectra sensitively reflect structural changes which are induced by annealing at moderate temperatures (below the first crystallization stage) when the investigated samples are still amorphous. The effects of structural rearrangement proposed from the DSC results are recognized both at room and low (77 K) temperature MOssbauer spectra. Annealing performed within the temperature range of the first crystallization stage provided different amounts of nanocrystallites. Nevertheless, the total amount of crystals towards the end of the first DSC peak was surprisingly low reaching only about 35%. XRD and TEM confirmed a bcc arrangement of Fe atoms without any distortion in lattice constant. Although the diameter the grains reaches barely 10 nm, the magnetic interactions among them and their impact on the surrounding amorphous residual matrix are striking. They are thoroughly discussed by the help of Mössbauer effect spectra taken at room temperature and at 77 K. Modifications of surface properties achieved by laser treatment are discussed using conversion electron Mössbauer spectrometry.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Yoshizawa, Y., Oguma, S., and Yamauchi, K (1988) New-Fe-based soft magnetic alloys composed ofultrafine grain structure, J. Appl. Phys. 64, 6044–6046.
Hernando, A., Vázquez, M., and Páramo, D. (1998) Applications of amorphous and nanocrystalline magnetic materials as sensing elements, Mater. Sci. Forum 269–272, 1033–1042.
Herzer, G. (1993) Nanocrystalline soft magnetic materials, Phys. Scr. T49, 307–314.
Miglierini, M., Kopcewicz, M., Idzikowski, B., Horváth, Z. E., Grabias, A., Škorvánek, I., Dłużewski, P., and Daróczi, Cs. S. (1999) Structure, hyperfine interactions and magnetic behaviour of amorphous and nanocrystalline Fe80M7B12CU1 (M = Mo, Nb, Ti) alloys, J. Appl. Phys. 85, 1014–1025.
(1984, 1987, 1989) in Mössbauer Spectroscopy Applied to Inorganic Chemistry, Vol. 1–3, G. J. Long (ed.), Plenum Press, New-York, (1993, 1996) in Mössbauer Spectroscopy Applied to Magnetism and Materials Science Vol 1, 2, G. J. Long and F. Grandjean (eds.), Plenum Press, New-York., (1999), in Mössbauer Spectroscopy in Materials Science, Miglierini M. and Petridis D. (eds.), Kluwer Academic Publishers, Dordrecht.
Illeková, E., Cunat, Ch., Kuhnast, F. A., Aharoune, A., and Fiorani, J. M. (1992) Complex behaviour of specific heat during structural relaxation of Fe73Co12B15 metallic glass, Thermochim. Acta 203, 445–455.
Miglierini, M., Tóth, I., Seberíni, M., Illeková, E., and Idzikowski B. (2002) Structure and hyperfine interactions of melt-spun Fe80Mo7X1Bl2 (X = Cu or Au) before and after transformation into nanocrystalline states, J. Phys.: Condens. Matter 14, 1249–1260.
Suzuki, K., Kataoka, N., Inoue, A., Makino, A., and Masumoto, T. (1990) High saturation magnetization and soft magnetic properties of FeZrB alloys with ultrafine structure, Mater. Trans. JIM 31, 743–746.
Miglierini, M. and Grenèche, J. M. (1997) Mössbauer spectrometry of Fe(Cu)MB-type nanocrystalline alloys: I. The fitting model for the Mössbauer spectra, J. Phys.: Condens. Matter 9, 2303–2319.
Grabias, A. and Kopcewicz, M. (1998) Crystallization of the amorphous Fe81Zr7B12 alloy inuced by short time annealing, Mater. Sci. Forum 269–272, 725–730.
Grabias, A. and Kopcewicz, M. (1999) Transmission and conversion electron Mössbauer study of crystallization of amorphous FeZrB alloys, Acta Phys. Pol. A 96, 123–130.
Garitaonandia, J.S., Schmoll, D.S., and Barandiarán, J. M. (1998) Model of exchange-field penetration in nanocrystalline Fe87Zr6B6Cu alloys from magnetic and Mössbauer studies, Phys. Rev. B 58, 12147–12158.
Hupe, O., Chuev, M.A., Bremers, H., Hesse, J., and Afanas’ev, A. M. (1999) Magnetic properties of nanostructured ferromagnetic FeCuNbB alloys revealed by a novel method for evaluating complex Mössbauer spectra, J. Phys.: Condens. Matter 11, 10545–10556.
Grenèche, J.M. and Ślawska-Waniewska, A. (2000) About the interfacial zone in nanocrystalline alloys, J. Magn. Magn. Mat. 215–216, 264–267.
Hernando, A. and Kulik, T. (1994) Exchange interactions through amorphous paramagnetic layers in ferromagnetic nanocrystals, Phys. Rev. B 49, 7064–7067.
Navarro, I., Ortuño, M. and Hernando, A. (1996) Ferromagnetic interactions in nano-structured systems with two different Curie temperatures, Phys. Rev. B 53, 11656–11660.
Grenèche, J.M. (2005) Intergranular phase in nanocrystalline alloys: Structural aspects and role on magnetic properties, in Properties and Aplications of Nanocrystalline Alloys from Amorphous Precursors, Idzikowski B., Švec P., and Miglierini M. (eds.), Kluwer Academic Publishers, Dordrecht, pp. 373–384.
Grenèche, J.M. and Miglierini, M. (1999) Mössbauer spectrometry applied to iron-based nanocrystalline alloys I. High temperature studies, in M. Miglierini and D. Petridis (eds.), Mössbauer Spectroscopy in Materials Science, Kluwer Academic Publishers, Dordrecht, pp. 243–256.
Miglierini, M. and Grenèche, J M. (1997) Mössbauer spectrometry of Fe(Cu)MB-type nanocrystalline alloys: II. The topography of hyperfine ineractions in Fe(Cu)ZrB alloys, J. Phys.: Condens. Matter 9, 2321–2347.
Nomura, K. (1999) Conversion Electron Mössbauer Spectroscopy, in Mössbauer Spectroscopy in Materials Research, Miglierini M. and Petridis D. (eds.), Kluwer Academic Publishers, Dordrecht, pp. 63–78.
Gancedo, J.R., Gracia, M., and Marco, J. F. (2003) On the Applications of Mössbauer Spectroscopy to the Study of Surfaces, in Material Research in Atomic Scale by Mössbauer Spectroscopy, Mashlan M., Miglierini M., and Schaaf P. (eds.), Kluwer Academic Publishers, Dordrecht, pp. 41–52.
Grabias, A., Kopcewicz, M., and Idzikowski, B. (1999) Surface analysis of the nano-crystalline Fe-based alloys by conversion electron Mössbauer spectroscopy, in Mater. Res. Soc. Symp. Proc., Vol. 577, Materials Research Society, pp. 543–548.
Bibicu, I., Garitaonandia, J. S., Plazaola, F., and Apinaniz, E. (2001) X-ray diffraction, transmission Mössbauer spectrometry and conversion electron Mössbauer spectrometry studies of the Fe87Zr6B6Cu1, nanocrystallization process, J. Non-Crystal. Solids 287, 277–281.
Grabias, A., Kopcewicz, M., and Idzikowski, B. (2000) On the formation of the nano-structure in Fe80M7B12Cu1 (M: Ti, Ta, Nb, Mo) alloys, Hyperfine Interactions 126, 21–25.
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
Miglierini, M., Degmová, J., Kaňuch, T., Švec, P., Illeková, E., Janičkovič, D. (2005). Magnetic Microstructure of Amorphous/Nanocrystalline Fe-Mo-Cu-B Alloys. 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_38
Download citation
DOI: https://doi.org/10.1007/1-4020-2965-9_38
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)