Document type:
Zeitschriftenaufsatz
Author(s):
Tajima, K.; B̈oni, P.; Shirane, G.; Ishikawa, Y.; Kohgi, M.
Title:
Paramagnetic Spin Fluctuations in an ${\mathrm{Fe}}_{65}$${\mathrm{Ni}}_{35}$ {{Invar}} Alloy
Abstract:
Polarized neutron scattering experiments have been performed on an Fe65Ni35 Invar alloy in the paramagnetic phase at T=1.25Tc. Constant-q spectra were fitted to simple Lorentzian functions and the q-dependence of the half-width $\Gamma$ was found to agree with that of the spin-diffusion model in the measured q range (0.1 A-19A-1). The amplitude of the spin fluctuation can be well described by the localized model with parameters which are deduced from the measured spin-wave dispersion at low temp...    »

Journal title:
Physical Review B
Year:
1987
Journal volume:
35
Month:
jan
Journal issue:
Pages contribution:
274
Fulltext / DOI: