The dependence of pulse properties of ferrous borate single crystals on their thickness

It is established that the magnitude of the discontinuity in the slope of a pulse-switching curve defined as the ratio between the switching coefficients S _w1 and S _w2 corresponding to the first and second parts of the switching curve, respectively, decreases with an increase in the thickness of a ferrous borate single crystal. This change is generally caused by a decrease in the coefficient S _w1, whose magnitude is inversely proportional to the sample’s thickness. In order to analyze the results obtained, we used the early proposed expression τ^?1=aH _s ?,bA ², connecting the switching rate τ^?1 with the amplitude of the magnetic field H _s and the intensity A of the magnetoelastic vibrations accompanying the pulse switching. It is found that the coefficient a depends only slightly on the sample’s thickness, while the coefficient b is inversely proportional to the thickness squared. Thus, the main part of the energy losses due to magnetoelastic vibrations is associated with elastic lattice vibrations.