Abstract
A theoretical analysis of small-angle neutron scattering is performed for the Fe65Ni35 alloy at a temperature T=0.9T C =450 K. The results obtained indicate the existence of long-wavelength magnetic excitations that do not correspond to spin waves of the Holstein-Primakoff type. The possible nature of these excitations is discussed.
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Translated from Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 80, No. 3, 2004, pp. 226–230.
Original Russian Text Copyright © 2004 by Mikhailov, Kazantsev.