1207.4428 (G. Alvarez et al.)

Neutron scattering experiments and simulations near the magnetic
percolation threshold of Fe_x Zn_{1-x} F_2    [PDF]

G. Alvarez, N. Aso, D. P. Belanger, A. M. Durand, V. Martin-Mayor, K. Motoya, Y. Muro

The low temperature excitations in the anisotropic antiferromagnetic Fe_{1-x} Zn_x F_2 for x=0.25 and 0.31, at and just above the magnetic percolation threshold concentration x_p=0.25, were measured using inelastic neutron scattering. The excitations were simulated for x=0.31 using a localized, classical excitation model, which accounts well for the energies and relative intensities of the excitations observed in the scattering experiments.

View original: http://arxiv.org/abs/1207.4428