title: Spin dynamics in a frustrated magnet.
abstract: 180 degrees spin flips have been identified as the dominant fluctuation mechanism at the transverse spin freezing transition in partially frustrated a-Fe92Zr8. The form of the selective excitation double Mössbauer spectra, coupled with the perfect agreement with zero-field muon spin relaxation data, eliminates other relaxation forms.
authors.affiliation: Physics Department and Centre for the Physics of Materials, McGill University, 3600 University Street, Montreal, Quebec, Canada H3A 2T8.
authors.forename: J
authors.initials: J
authors.lastname: van Lierop
authors.forename: D H
authors.initials: DH
authors.lastname: Ryan