Abstract
The films of nanocrystalline Fe-Ni alloys obtained by various methods in the permalloy composition range (∼20 at. % Fe) were studied by the method of spin-wave resonance (SWR) spectroscopy. The effective SW exchange stiffness ηeff exhibits a characteristic dependence on the spin wavelength, which is indicative of the magnetization fluctuations in these films with a correlation radius of 12–20 nm. This is indirect evidence of the microphase separation in these nanocrystalline alloys and provides an estimate of the characteristic spatial size of an inhomogeneity in the atomic ratio X Fe/X Ni.
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Translated from Pis’ma v Zhurnal Tekhnichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 27, No. 8, 2001, pp. 81–89.
Original Russian Text Copyright © 2001 by Iskhakov, Prokof’ev, Chekanova, Zhigalov.
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Iskhakov, R.S., Prokof’ev, D.E., Chekanova, L.A. et al. The spin-wave resonance study of concentrational inhomogeneities in nanocrystalline Ni-Fe-P and Ni-Fe-C alloys. Tech. Phys. Lett. 27, 344–347 (2001). https://doi.org/10.1134/1.1370222
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DOI: https://doi.org/10.1134/1.1370222