Equation of motion for a domain wall movement under a nonuniform transverse magnetic field

Title
Equation of motion for a domain wall movement under a nonuniform transverse magnetic field
Authors
You, Chun-Yeol
Keywords
domain wall, nonuniform transverse, magnetic field
Issue Date
2008-05
Publisher
American Institute of Physics
Abstract
We investigate the dynamics of the domain wall in a nonuniform field driven domain wall motion memory concept. The equation of motion for a transverse Néel-type domain wall under a nonuniform transverse magnetic field is obtained with a collective coordinate approach. The validity of the equation of the motion is confirmed with micromagnetic simulations.We find that the domain wall velocity depends on the domain wall width, Gilbert damping parameter a, saturation magnetization, and the gradient of the field. The domain wall velocity of ~100 m/ s is obtained with typical material as Permalloy with a moderate field gradient (100 Oe/um). It has promising results for memory applications.
URI
http://dspace.inha.ac.kr/handle/10505/1531
ISSN
0003-6951
Appears in Collections:
College of Natural Science(자연과학대학) > Physics (물리학) > Journal Papers, Peports(물리학 학술논문, 보고서)
Files in This Item:
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