Spin-wave dynamics in Invar Fe65Ni35 alloy studied by small-angle polarized neutron scattering

Spin-wave dynamics in Invar Fe₆₅Ni₃₅ alloy studied by small-angle polarized neutron scattering

Research output: Contribution to journal › Article › peer-review

Department of Nuclear Physics Research Methods

DOI

https://doi.org/10.1007/s003390201626
Final published version

S. V. Grigoriev
S. V. Maleyev
V. V. Deriglazov
A. I. Okorokov
N. H. Van Dijk
E. Brück
J. C.P. Klaasse
H. Eckerlebe
G. Kozik

Spin dynamics in Fe₆₅Ni₃₅ Invar alloy has been studied by left-right asymmetry of small-angle polarized neutron scattering below T_C = 485 K in external magnetic fields of H = 0.05-0.25 T inclined relative to the incident beam. The spin-wave stiffness D and the damping Γ were obtained by fitting the antisymmetrical contribution to the scattering. The spin-wave stiffness extrapolated by a (T/T_C)^5/2 law to T = 0 K is D₀ = 117 ± 2 meVÅ², which is somewhat smaller than the spin-wave stiffness obtained by triple-axis spectrometry.

Original language	English
Pages (from-to)	S719-S721
Journal	Applied Physics A: Materials Science and Processing
Volume	74
Issue number	SUPPL.I
DOIs	https://doi.org/10.1007/s003390201626
State	Published - Dec 2002

Scopus subject areas

Chemistry(all)
Materials Science(all)

ID: 5342331