Abstract
Alloys of Co78-x Pt x B10Si12 were produced using the melt-spin process in order to study the crystallization behavior and ensuing magnetic properties of the Co-Pt amorphous alloys as a function of the Pt content. We showed that when x>15, well below its stoichiometric composition, CoPt intermetallic compound crystallized in the amorphous alloy. Below this composition, the main crystallization product was Co with Pt dissolved in its lattice. The nucleation of CoPt greatly altered the crystallized microstructures and magnetic properties of the Co-Pt amorphous alloys during annealing. In spite of the nucleation of CoPt with its high magnetic anisotropy, the highest coercivity was obtained when x was 15, free of the CoPt grains. It was also concluded that the Pt addition, in general, triggered crystallization to occur at a progressively lower temperature.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
F.E. Luborsky: Amorphous Metallic Alloys, Butterworth & Co. (Publishers) Ltd., London, 1983, p. 2.
C.K. Kim, C.S. Yoon, T.Y. Byun, and K.S. Hong: Oxid. Met., 2001, vol. 55, pp. 177–87.
I.C. Rho, C.S. Yoon, C.K. Kim, T.Y. Byun, and K.S. Hong: Mater. Sci. Eng. B, 2002, vol. 96, pp. 48–52.
T.Y. Byun, Y. Oh, C.S. Yoon, and C.K. Kim: IEICE Trans. Electron., 2003, vol. E86-C (9), pp. 1830–34.
E.A. Brandes and G.B. Brook: Smithells Metals Reference Book, Butterworth-Heinemann Ltd., Oxford, United Kingdom, 1992, pp. 11–200.
M. Jamet, M. Négrier, V. duuis, J. Tuaillon-Combes, P. Mélinon, A. Pérez, W. Wernsdorfer, B. Barbara, and B. Baguenard: J. Magn. Magn. Mater., 2001, vol. 237, pp. 293–301.
Q.F. Xiao, E. Brűck, Z.D. Zhang, F.R. de Boer, and K.H.J. Buschow: J. Alloys Compounds, 2002, vol. 336, pp. 41–45.
Chung-Sik Yoo, Sung K. Lim, C.S. Yoon, and C.K. Kim: J. Alloys Compounds, 2003, vol. 359, pp. 261–66.
H. Yamaguchi, O. Kitakami, S. Okamoto, Y. Shimada, K. Oikawa, and K. Fukamichi: Appl. Phys. Lett., 2001, vol. 79 (13), pp. 2001–03.
H.P.J. Wijn: Magnetic Properties of Metals: d-Elements, Alloys and Compounds, Springer-Verlag, Berlin, 1991, p. 88.
F.E. Luborsky: Amorphous Metallic Alloys, Butterworth & Co. (Publishers) Ltd., London, 1983, pp. 148–49.
J.L. Walter: Mater. Sci. Eng., 1981, vol. 50, pp. 137–42.
J.A. Aboaf, S.R. Herd, and E. Klokholm: IEEE Trans. Magn., 1983, vol. 19 (4), pp. 1514–19.
C.K. Kim: Mat. Sci. Eng. B, 1996, vol. 39, p. 195.
R.C. O’Handley: Modern Magnetic Materials, John Wiley & Sons, Inc., New York, NY, 2000, p. 180.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Yoo, CS., Lim, S.K., Yoon, C.S. et al. Crystallization of Co100-x Pt x B10Si12 amorphous metallic alloys. Metall Mater Trans A 35, 2057–2061 (2004). https://doi.org/10.1007/s11661-004-0154-0
Received:
Issue Date:
DOI: https://doi.org/10.1007/s11661-004-0154-0