Domain-wall velocities of up to 750 m s−1 driven by exchange-coupling torque in synthetic antiferromagnets

2015 ◽  
Vol 10 (3) ◽  
pp. 221-226 ◽  
Author(s):  
See-Hun Yang ◽  
Kwang-Su Ryu ◽  
Stuart Parkin
Keyword(s):  
Domain Wall ◽  
Exchange Coupling

Influence of exchange coupling on current-driven domain wall motion in a nanowire

2010 ◽  
Vol 322 (19) ◽  
pp. 2969-2972 ◽  
Author(s):  
Takashi Komine ◽  
Kota Takahashi ◽  
Hiroshi Murakami ◽  
Ryuji Sugita
Keyword(s):  
Domain Wall ◽  
Exchange Coupling ◽  
Wall Motion ◽  
Domain Wall Motion

Magnetic Structure of Nanowires and Magnetostatic Interaction

2010 ◽  
Vol 168-169 ◽  
pp. 269-272 ◽  
Author(s):  
A.A. Ivanov ◽  
V.A. Orlov ◽  
N.N. Podolsky
Keyword(s):  
Domain Wall ◽  
Numerical Simulations ◽  
Magnetic Structure ◽  
Domain Structure ◽  
Ground State ◽  
Exchange Coupling ◽  
Anisotropy Axis ◽  
Induced Anisotropy ◽  
Magnetostatic Interaction ◽  
Stable Domain

The ground state magnetization of nanowires built of ferromagnetic crystallites is considered taking into account the magnetostatic interaction. The criterion of formation of domains is found. The thickness of a domain wall is calculated analytically and the results are compared with the numerical simulations. We show that when the exchange coupling between crystallites is absent its role is played by magnetostatics that ensures the existence of stable domain structure. The direction of the induced anisotropy axis is shown to be determined by the shape of crystallites.

Characterizing formation of interfacial domain wall and exchange coupling strength in laminated exchange coupled composites

2013 ◽  
Vol 102 (16) ◽  
pp. 162408 ◽  
Author(s):  
H.-C. Hou ◽  
B. J. Kirby ◽  
K. Z. Gao ◽  
C.-H. Lai
Keyword(s):  
Domain Wall ◽  
Coupling Strength ◽  
Exchange Coupling

EXCHANGE BIAS AND ANGULAR DEPENDENCE IN Co/Co3O4 BILAYERS

2005 ◽  
Vol 19 (15n17) ◽  
pp. 2580-2585 ◽  
Author(s):  
YA-XIN WANG ◽  
BIAO YOU ◽  
WEI TIAN ◽  
YI-XING WANG ◽  
LIANG SUN ◽  
...  
Keyword(s):  
Domain Wall ◽  
Magnetron Sputtering ◽  
Angular Dependence ◽  
Exchange Bias ◽  
Photoelectron Spectroscopy ◽  
Exchange Coupling ◽  
Easy Axis ◽  
Bias Effect ◽  
Exchange Bias Effect ◽  
X Ray

Co/Co 3 O 4 bilayers were fabricated by magnetron sputtering with Co and Co 3 O 4 targets. The exchange bias effect was observed at 80K, which was much higher than the N• el temperature of Co 3 O 4 (about 40K). X-ray photoelectron spectroscopy results showed that CoO was formed near the Co/Co 3 O 4 interface, probably due to diffusion of oxygen atoms. The angular dependence of exchange coupling in Co/Co 3 O 4 bilayers could not be satisfied with simple cosine function, and the position of the maximum of exchange bias departed from the FM easy axis. The mechanism including rotatable anisotropy and movement of domain wall in AF was used to explain the experiment results.

scholarly journals Interlayer Exchange Coupling: Doping, Interface States and Domain Wall Resonance

1999 ◽  
Vol 52 (5) ◽  
pp. 823
Author(s):  
R. L. Stamps
Keyword(s):  
Domain Wall ◽  
Exchange Coupling ◽  
Magnetic Film ◽  
Metal Films ◽  
Interlayer Exchange Coupling ◽  
New Type ◽  
Interlayer Exchange ◽  
Nonmagnetic Spacer ◽  
Domain Wall Resonance ◽  
Interface Effects

Possible interface effects are examined theoretically for oscillatory exchange coupling between ferromagnetic metal films separated by a nonmagnetic spacer film. It is argued that the exchange coupling is sensitive to aspects of the magnetic film’s electronic structure, and evidence from magnetic film doping experiments is described. Possible effects of interface electronic states are also explored. Finally, a suggestion for a new type of domain wall resonance experiment is made that could provide unique measures of local values of the exchange coupling strength.

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