Role of Spin-Nonconserving Forces in the Critical Dynamics of Fe at the Curie Point
- 11 October 1982
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 49 (15) , 1096-1099
- https://doi.org/10.1103/physrevlett.49.1096
Abstract
Modern, high-resolution neutron-scattering techniques, in particular neutron spin echo, were applied to reinvestigate the critical dynamics of iron at temperatures above the Curie point. It was found that previously claimed evidence for a crossover was in error, and that the dynamical scaling hypothesis unexpectedly breaks down at small wave numbers. This breakdown is shown to be due to spin-nonconserving forces, which are tentatively identified with the thermodynamic random fields.Keywords
This publication has 13 references indexed in Scilit:
- Observation of Crossover in the Dynamic Exponentin Fe and NiPhysical Review Letters, 1980
- Three-dimensional neutron polarimeter and spin dynamics investigationNuclear Instruments and Methods, 1978
- Neutron spin echo: A new concept in polarized thermal neutron techniquesThe European Physical Journal A, 1972
- Spin-spin relaxation near the curie pointJournal of Physics and Chemistry of Solids, 1971
- Temperature Dependence of the Linewidth in Critical Spin FluctuationPhysical Review Letters, 1970
- Critical and Spin-Wave Scattering of Neutrons from IronPhysical Review B, 1969
- Scaling Laws for Dynamic Critical PhenomenaPhysical Review B, 1969
- Magnetic correlations and neutron scatteringReports on Progress in Physics, 1968
- Ultrasonic attenuation and ESR linewidth near magnetic critical pointsPhysics Letters A, 1968
- Fluctuations d'aimantation et opalescence critiqueJournal of Physics and Chemistry of Solids, 1960