The dependence of pulse properties of ferrous borate single crystals on their thicknessстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация: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 tau(-1) = aH(s) - bA(2), connecting the switching rate tau(-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. (C) 2000 MAIK "Nauka/Interperiodica".