Annotation
A new method for estimating spin relaxation times in magnetic materials by ultrasound damping is considered. A description is given of a phenomenological theory of the relaxation mechanism of sound damping in a single-domain perfect crystal with consideration for a nonhomogeneous internal field. Numerical estimates of spin relaxation times in a Mn-Zn spinel single crystal are presented that use data on damping of a 30-MHz transverse wave. A possibility of separating the spin-spin and the spin-lattice relaxaton times is discussed.
© 2016 Publisher M.V.Lomonosov Moscow State University
Authors
0.Yu. Belyaeva, S.N. Karpachev
Department of Acoustics, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
Department of Acoustics, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia