Abstract
Results of a quantitative determination of parameters of the micromagnetic structure of nanocrystalline Fe, Fe95Zr5, Fe90N10, and Fe85Zr5N10 films prepared by magnetron sputtering have been reported. The magnetocrystalline (K 1), magnetoelastic (K ME), magnetostatic (K MS), and surface (K a,s) anisotropy constants have been shown to be components of the effective local anisotropy (K eff) constant determined experimentally. The shape of hysteresis loops is determined by the existence of two main components of macroscopic effective magnetic anisotropy, one of which is caused by local (within a nanograin) magnetic anisotropy averaged over the exchange interaction length, while the other is related to magnetoelastic anisotropy due to residual macrostresses.
Similar content being viewed by others
References
E. N. Sheftel, “Soft Magnetic Nanocrystalline Films of Alloys of Fe—Refractory Interstitial Phase for Application in Devices for Magnetic Recording”, Inorganic Materials: Applied Research, 2010, Vol. 1, No. 1, pp. 17–24.
S. Chikasumi, S., Physics of Ferromagnetism (Syokabo, Tokyo, 1980; Moscow: Mir, 1983); K. P. Belov, Magnetostriction Phenomena and Their Applications (Nauka, Moscow, 1987).
G. Herzer, “Modern soft magnets: Amorphous and nanocrystalline materials,” Acta Mater. 61, 718–734 (2013).
Ch. Chen, O. Kitakami, S. Okamoto, and Yu. Shimada, “Surface anisotropy in giant magnetic coercivity effect of cubic granular FeCo/SiO2 and NiCo/SiO2 films: A comparison with Néel’s theory,” J. Appl. Phys. 86, 2161–2165 (1999).
S. V. Vonsovskii and Ya. S. Shur, Ferromagnetism (OGIZ, Moscow, 1948) [in Russian].
R. S. Iskhakov and S. V. Komogortsev, “Magnetic microstructure of amorphous, nanocrystalline, and nanophase ferromagnets,” Phys. Met. Metallogr. 112 666–681 (2011).
E. V. Shelekhov and T. A. Sviridova, “Programs for X-ray analysis of polycrystals,” Metal Sci. Heat Treat. 42, 309–312 (2000).
S. Ya. Betsofen, “X-ray diffraction methods for the evaluation of residual stresses in the surface layers with gradient structure,” Mater. Sci. 42, 367–375 (2006).
E. V. Harin, E. N. Sheftel, and A. I. Krikunov, “Atomic force microscopy measurements of magnetostriction of soft-magnetic films,” Solid State Phenom. 190, 179–182 (2012).
D. Wei, Micromagnetics and Recording Materials (Springer Briefs in Applied Science and Technology, 2012).
M. Celasco, “Saturation approach law of longitudinal magnetostriction in grain-oriented ferromagnetic cubic materials,” Nuovo Cimento, Soc. Ital. Fis., B 9, 425–439 (1972).
E. N. Sheftel’, E. V. Bobylev, and M. I. Petrzhik, “Study of mechanical properties of soft-magnetic Fe79Zr9N12 films by nanoindentation method,” Proc. 5th Euro-Asian Sci.-Pract. Conf. “Strength of Inhomogeneous Structures” (PROST-2010), Moscow, 2010, p. 157 [in Russian].
E. Schlömann, “Properties of magnetic materials with a nonuniform saturation magnetization. I. General theory and calculation of static magnetization,” J. Appl. Phys. 38, 5027–5034 (1967).
S. Kobayashi, H. Takahashi, and Ya. Kamada, “Evaluation of case depth in induction-hardened steels: Magnetic hysteresis measurements and hardness-depth profiling by differential permeability analysis,” J. Magn. Magn. Mater. 343, 112–118 (2013).
A. G. Shishkov and V. E. Osukhovskii, “Effect of stray fields on the magnetization of thin permalloy films,” Proc. Int. Symp: “Magnetic Film Physics”, Irkutsk, 1968, pp. 107–120 [in Russian].
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © E.V. Harin, E.N. Sheftel, 2015, published in Fizika Metallov i Metallovedenie, 2015, Vol. 116, No. 8, pp. 795–802.
Rights and permissions
About this article
Cite this article
Harin, E.V., Sheftel, E.N. Micromagnetic structure of soft magnetic nanocrystalline Fe-based films. Phys. Metals Metallogr. 116, 753–759 (2015). https://doi.org/10.1134/S0031918X15080074
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0031918X15080074