J. Phys. IV France 08 (1998) Pr2-693-Pr2-696
Domain wall dynamics of yttrium orthoferriteY.S. Didosyan1, H. Hauser2, V.Y. Barash1 and P.L. Fulmek2
1 Russian Institute of Metrological Service, Andreevskaya nab. 2, Moscow 117965, Russia
2 Institut für Werkstoffe der Elektrotechnik, Technische Universität Wien, Gusshausstrasse 27-29, 1040 Wien, Austria
Measurements of the domain wall (DW) velocity v versus magnetic field H in yttrium orthoferrite by means of a dark field method are reported. The nonlinear character of the subsound domain wall dynamics is confirmed by numerous sets of the measured v (H) dependencies. Results of the work are summarized by histograms showing how often a given value of the velocity appeared in the measured v (H) curves. More than 20 maxima in the velocity range 200-1100 m/s are seen at the histograms. An assumption is made that the nonlinearities may be due to the newly discovered lines of zero magnetization in orthoferrites.
© EDP Sciences 1998