Ultrafast Magnetization Reversal Dynamics Investigated by Time Domain Imaging

2001 ◽  
Vol 86 (4) ◽  
pp. 728-731 ◽  
Author(s):  
B. C. Choi ◽  
M. Belov ◽  
W. K. Hiebert ◽  
G. E. Ballentine ◽  
M. R. Freeman
Keyword(s):  
Time Domain ◽  
Magnetization Reversal ◽  
Ultrafast Magnetization

scholarly journals Ultrafast magnetization reversal by picosecond electrical pulses

2017 ◽  
Vol 3 (11) ◽  
pp. e1603117 ◽  
Author(s):  
Yang Yang ◽  
Richard B. Wilson ◽  
Jon Gorchon ◽  
Charles-Henri Lambert ◽  
Sayeef Salahuddin ◽  
...  
Keyword(s):  
Magnetization Reversal ◽  
Electrical Pulses ◽  
Ultrafast Magnetization

Ultrafast Magnetization Reversal Dynamics on A Micrometer-Scale Thin Film Element Studied by Time Domain Imaging

2000 ◽  
Vol 648 ◽  
Author(s):  
B.C. Choi ◽  
G. Ballentine ◽  
M. Belov ◽  
W.K. Hiebert ◽  
M.R. Freeman
Keyword(s):  
Domain Wall ◽  
Time Domain ◽  
Magnetization Reversal ◽  
Switching Time ◽  
Magnetization Vector ◽  
Domain Wall Motion ◽  
Time Resolved ◽  
Imaging Results ◽  
Resonance Frequencies ◽  
The Time Domain

AbstractPicosecond time scale magnetization reversal dynamics in a 15nm thick Ni80Fe20 microstructure (10μm×2μm) is studied using time-resolved scanning Kerr microscopy. The time domain images reveal a striking change in the magnetization reversal mode, associated with the dramatic reduction in switching time when the magnetization vector is pulsed by a longitudinal switching field while a steady transverse biasing field is applied to the sample. According to the time domain imaging results, the abrupt change of the switching time is due to the change in the magnetization reversal mode; i.e., the nucleation dominant reversal process is replaced by domain wall motion if transverse biasing field is applied. Furthermore, magnetization oscillations subsequent to reversal are observed at two distinct resonance frequencies, which sensitively depend on the biasing field strength. The high frequency resonance at f=2 GHz is caused by damped precession of the magnetization vector, whereas another mode at f≈0.8 GHz is observed to arise from domain wall oscillation.

Time domain dynamics of the asymmetric magnetization reversal in exchange biased bilayers

2005 ◽  
Vol 71 (18) ◽  
Author(s):  
D. M. Engebretson ◽  
W. A. A. Macedo ◽  
Ivan K. Schuller ◽  
P. A Crowell ◽  
C. Leighton
Keyword(s):  
Time Domain ◽  
Magnetization Reversal ◽  
Domain Dynamics

Ultrafast Magnetization Reversal in DyFeCo Thin Film by Single Femtosecond Laser Pulse

2019 ◽  
Vol 120 (9) ◽  
pp. 825-830 ◽  
Author(s):  
S. V. Ovcharenko ◽  
P. O. Yakushenkov ◽  
N. A. Ilyin ◽  
K. A. Brekhov ◽  
E. M. Semenova ◽  
...  
Keyword(s):  
Thin Film ◽  
Laser Pulse ◽  
Femtosecond Laser ◽  
Femtosecond Laser Pulse ◽  
Magnetization Reversal ◽  
Ultrafast Magnetization
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