Abstract
β-Mn is paramagnetic down to the lowest temperature with strong spin fluctuations. Substitution of Al impurity makes the ground state into spin glass. By using polarized neutron scattering, we have directly observed antiferromagnetic spin fluctuations for both β-Mn and β-Mn0.9Al0.1. The characteristic energy of fluctuations for β-Mn is fairly large even at 7 K, implying a quantum origin for the fluctuations. On the other hand, the energy spectrum of β-Mn0.9Al0.1 becomes very sharp at low temperatures, indicating damping of spin fluctuations into the spin glass state. The temperature dependence of the spin-lattice relaxation time, T1, of 55Mn NMR also indicates the critical slowing down of fluctuations at low temperatures for β-Mn0.9Al0.1.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
