Direct observation and control of the Walker breakdown process during a field driven domain wall motion

被引：51

作者：

Glathe, S. ^{[1
]}

Mattheis, R. ^{[1
]}

Berkov, D. V. ^{[2
]}

机构：

[1] IPHT Jena, D-07745 Jena, Germany

[2] Innovent EV, D-07745 Jena, Germany

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 07期

关键词：

Domain walls;

D O I：

10.1063/1.2975181

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the real- time study of a domain wall motion in giant magnetoresistance nanostrips. We have visualized the Walker breakdown process (WBP) [N. L. Schryer and L. R. Walker, J. Appl. Phys. 45, 5406 (1974)] in single shot experiments. The domain wall motion above the Walker breakdown is highly nonperiodic. Surprisingly, the time intervals of movement are equal or larger than those where the domain wall nearly stops. When an additional transversal magnetic field is applied, domain wall motion becomes more regular, enabling the study of the WBP in more detail. A sufficiently large transverse field can suppress the WBP completely. (C) 2008 American Institute of Physics.

引用

页数：3

共 11 条

[1]

[Anonymous], MICROMAGUS PACKAGE M

[2] Dynamics of field-driven domain-wall propagation in ferromagnetic nanowires [J].