J. Phys. IV France
Volume 08, Numéro PR2, June 1998
Soft Magnetic Materials 13
Page(s) Pr2-693 - Pr2-696
Soft Magnetic Materials 13

J. Phys. IV France 08 (1998) Pr2-693-Pr2-696

DOI: 10.1051/jp4:19982161

Domain wall dynamics of yttrium orthoferrite

Y.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