Annotation
Antiferromagnetic resonance is detected in an $NaCa_2Mn_2V_3O_{12}$ crystal which contains octahedral $Mn^{2+}$ ions. It is established that there is an isotropic slot ($\Delta ^2$) in the antiferromagnetic resonance spectrum of the crystal, whose value is maximal at T $\sim$ 7K and is sharply reduced with a reduction in temperature. The results of measurements of the static magnetostriction of the same crystal justifies the hypothesis that $\Delta ^2$ is not related to the magnetoelastic interaction. The possible mechanism of the observed characteristics of the antiferromagnetic resonance in this crystal is discussed. This is interaction of the Jahn-Teller admixtures of the $Mn^{3+}$ ions in the crystal.
© 2016 Publisher M.V.Lomonosov Moscow State University
Authors
M.V. Levanidov, V.I. Sokolov
Department of General Physics for Natural Science Faculties, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
Department of General Physics for Natural Science Faculties, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia