High-Frequency Domain-Wall Motion and Magnetization Rotation of Patterned Permalloy Films under External Magnetic Field Excitation

2006 ◽  
Author(s):  
S. Azeemuddin ◽  
A. Hoffmann ◽  
R. Divan ◽  
M.J. Donahue ◽  
Seok Hwan Chung ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Domain Wall ◽  
Frequency Domain ◽  
High Frequency ◽  
Wall Motion ◽  
Domain Wall Motion ◽  
Magnetization Rotation ◽  
Field Excitation

Spontaneous Domain Wall Motion at Zero External Magnetic Field in Ferromagnetic Nanowire

2010 ◽  
Vol 46 (2) ◽  
pp. 217-219 ◽  
Author(s):  
Dede Djuhana ◽  
Hong-Guang Piao ◽  
Je-Ho Shim ◽  
Sang-Hyuk Lee ◽  
Su-Hyeong Jun ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Domain Wall ◽  
Wall Motion ◽  
Domain Wall Motion ◽  
Ferromagnetic Nanowire

scholarly journals The Dynamics of Domain Wall Motion in Spintronics

2020 ◽  
Vol 6 (3) ◽  
pp. 40
Author(s):  
Diego Bisero
Keyword(s):  
Magnetic Field ◽  
Thin Film ◽  
External Magnetic Field ◽  
Domain Wall ◽  
Effective Mass ◽  
General Equation ◽  
Wall Motion ◽  
Domain Walls ◽  
Domain Wall Motion ◽  
Magnetic Thin Film

A general equation describing the motion of domain walls in a magnetic thin film in the presence of an external magnetic field has been reported in this paper. The equation includes all the contributions from the effects of domain wall inertia, damping and stiffness. The effective mass of the domain wall, the effects of both the interaction of the DW with the imperfections in the material and damping have been calculated.

Direct Observation of Reverse Magnetic Domain and Magnetic Domain Wall Motion in Nd-Fe-B Magnet at High Temperature by Lorentz Microscop

MRS Advances ◽  
2016 ◽  
Vol 1 (3) ◽  
pp. 241-246 ◽  
Author(s):  
Toshimasa Suzuki ◽  
Koichi Kawahara ◽  
Masaya Suzuki ◽  
Kenta Takagi ◽  
Kimihiro Ozaki
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Domain Wall ◽  
Wall Motion ◽  
Domain Walls ◽  
Magnetic Domain ◽  
Domain Wall Motion ◽  
Thin Foil ◽  
Magnetic Domain Wall

ABSTRACTWe conducted the in-situ observations of the magnetic domain structure change in Nd-Fe-B magnets at high temperature by transmission electron microscopy (TEM) / Lorentz microscopy with applying an external magnetic field. Prior to observation, a thin foil was magnetized by an external magnetic field of 2.0 T to almost saturation, then the magnetic domain structures were observed by the Fresnel mode with in-situ heating. At 225°C, reverse magnetic domains were found to generate in the thin foil sample without applying an external magnetic field. When we applied a magnetic field on the same direction to the pre-magnetization direction at 225°C, one magnetic domain wall was pinned by a grain boundary and the other magnetic domain wall moved. As the results, the reverse magnetic domain shrank then annihilated. When we cut the applied magnetic field, the reverse magnetic domain generated at almost the same location. On the other hand, when we applied a magnetic field to the foils in the opposite direction, the reverse domain started to grow, i.e., magnetic domain walls started to move. The observation results of the shrink or growth of the reverse domain showed that the pinning effect of grain boundary against domain wall motion would be different depending on the applied magnetic field direction. Moreover, domain walls was observed to be pinned by grain boundaries at elevated temperature, so that the coercivity of Nd-Fe-B magnet would occur by pinning mechanism.

Magnetic field-induced domain wall motion in cylindrical nanowires

2015 ◽  
Author(s):  
A. Wartelle ◽  
C. Thirion ◽  
R. Afid ◽  
S. Jamet ◽  
S. Da Col ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Domain Wall ◽  
Wall Motion ◽  
Domain Wall Motion
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