Вид документа : Статья из журнала Шифр издания : 54/C 73 Автор(ы) : Nosov A. P., Rinkevich A. B., Ustinov V. V., Vasil'ev V. G. Заглавие : Complex dynamics of magnetic-flux oscillations in bulk lead-doped lanthanum manganite Место публикации : The Physics of Metals and Metallography. - 2009. - Vol. 107, № 1. - С. 34-44: il. Примечания : Bibliogr. : p. 43-44 (27 ref.) ISSN: 0031-918X ББК : 54 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Ключевые слова (''Своб.индексиров.''): допирование--свинец--манганиты--магнитные колебания Аннотация: Magnetic-flux oscillations in a core made from lead-doped lanthanum manganite have been investigated. The core was located in crossed dc and radio-frequency ac magnetic fields. At a sufficiently large ampltude of the rf field, magnetic-flux jumps were observed and regions of ultrasharp oscillations of the magnetic flux appeared, which correspond to a bifurcation of a soft generation of a limit cycle. Flattened segments appeared in the oscillograms. The phenomena observed are qualitatively explained based on an analysis of processes of the dynamic magnetization reversal of the core along a minor hysteresis loop. The nonlinear phenomena, which indicate a complex dynamics of the magnetic-flux oscillations, exist in a moderately conducting feromagnetic manganite only in a certain range of frequencies of the ac field, where the depth of a skin layer is comparable with the thickness of the core Держатели документа: Центральная научная библиотека УрО РАН Доп.точки доступа: Nosov, A. P.; Rinkevich, A. B.; Ustinov, V. V.; Vasil'ev, V. G.