MAGNETOACOUSTIC OSCILLATIONS IN ANTIFERRO MAGNET FEBO3

The amplitude oscillations of a sound propagating transversly to magne tic field H in a plate of iron borate have been investigated. These os cillations are called the Gakel'-Turov oscillations (GTO), It was foun d that GTO have fine structure, It is shown (hat in the case of H < 20 0 Oe the period of GTO differs considerably from theoretical predictio n that considers only the magnetostriction mechanism of the magnetoela stic connection. The above peculiarities are discussed in the framewor k of the piezomagnetic properties of the crystal.