Вид документа : Статья из журнала Шифр издания : 54/B 24 Автор(ы) : Shur V. Ya., Rumyantsev E. L., Kuminov V. P., Subbotin A. L., Kozhevnikov V. L. Заглавие : Barkhausen effect in stepped motion of a plane domain boundary in gadolinium molybdate Место публикации : Physics of the Solid State. - 1999. - Vol. 41, № 2. - С. 269-273: il. Примечания : Bibliogr. : p. 272-273 (18 ref.) ISSN: 1063-7834 ББК : 54 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Ключевые слова (''Своб.индексиров.''): молибдат гадолиния--домены Аннотация: Barkhausen pulses generated in stepped motion of a single plane domain boundary ~PDB! are investigated experimentally in single-crystalline wafers of the extrinsic ferroelastic ferroelectric gadolinium molybdate containing artificial pinning centers of the ‘‘field inhomogeneity’’ type near the edges of the sample. Two scenarios of the evolution of a PDB in interaction with ‘‘defects’’ are proposed on the basis of analyzing the shape of the pulses in a linearly increasing field: small changes of the pulse shape in a weak field and the generation of wedge domains in a strong field. The proposed mechanism of PDB motion due to the generation of steps near the edge of the sample and their longitudinal motion provides a means for explaining the experimentally observed linear field dependence of the PDB velocity and for determining the velocity of the steps Доп.точки доступа: Shur, V. Ya.; Rumyantsev, E. L.; Kuminov, V. P.; Subbotin, A. L.; Kozhevnikov, V. L.; Кожевников Виктор Леонидович