Аннотация
One of the still open questions in the physics of magnetic systems
is the comprehension of the hysteretic behavior of ferromagnetic
thin films. Experiments on two dimensional specimens highlight different
features from bulk systems, due to the greater complexity of domain structure
in two dimensions. In this contribution we analyze the effects of the
long range dipolar interactions on the domain walls dynamics.
We present a model for the study of a single zigzag domain wall motion
in a ferromagnetic system with in-plane magnetization, driven by an
external magnetic field, and find that such a model is suitable for the
interpretation of the dynamic hysteresis (1) and Barkhausen noise (2)
experiments on two dimensional specimens. Moreover, the magnetization-driven
regime is analyzed, in order to investigate the influence of the driving
mechanism on the hysteretic response of the system.
(1) B. Cerruti and S. Zapperi, Phys. Rev. B 75, 064416 (2007)
(2) B. Cerruti and S. Zapperi, J. Stat. Mech. (2006) P08020
Пользователи данного ресурса
Пожалуйста,
войдите в систему, чтобы принять участие в дискуссии (добавить собственные рецензию, или комментарий)