Annotation
A phenomenological model is proposed to describe phase transitions in ferroelectric alums. It is shown that the anomaly of the dielectric constant in MASD at 145 К is due to a phase transition in the field of spontaneous polarization which takes place as a result of the interaction between collinear dipole subsystems. Some peculiarities in the behavoir of the dielectric constants of alums under the influence of external factors are explained.
© 2016 Publisher M.V.Lomonosov Moscow State University
Authors
S.V. Pavlov
Department of Physics of Crystals, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
Department of Physics of Crystals, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
Science News of the Faculty of Physics, Lomonosov Moscow State University
This new information publication, which is intended to convey to the staff, students and graduate students, faculty colleagues and partners of the main achievements of scientists and scientific information on the events in the life of university physicists.