Search for spin waves in (Eu,Sr)S spin glasses

Abstract
Inelastic neutron scattering studies on the magnetic dilution system EuxSr1−xS with x = 1.00, 0.70, 0.52, and 0.50 reveal inelastic scattering even in the spin‐glass phase, as measured for wave vectors between Q = 1.0 and 0.5 Å−1 in compounds with x = 0.52 and 0.50. These lines, however, are quite broad, and there is, in addition, considerable magnetic scattering intensity at small energies. The observations are in reasonable agreement with numerical model calculations for (Eu,Sr)S by Krey.