scholarly journals Polarity reversal of a magnetic vortex core by a unipolar, nonresonant in-plane pulsed magnetic field

2009 ◽  
Vol 94 (17) ◽  
pp. 172506 ◽  
Author(s):  
D. J. Keavney ◽  
X. M. Cheng ◽  
K. S. Buchanan
Keyword(s):  
Magnetic Field ◽  
Vortex Core ◽  
Pulsed Magnetic Field ◽  
Magnetic Vortex ◽  
Polarity Reversal

scholarly journals Duffing oscillation-induced reversal of magnetic vortex core by a resonant perpendicular magnetic field

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Kyoung-Woong Moon ◽  
Byong Sun Chun ◽  
Wondong Kim ◽  
Z. Q. Qiu ◽  
Chanyong Hwang
Keyword(s):  
Magnetic Field ◽  
Vortex Core ◽  
Magnetic Vortex ◽  
Perpendicular Magnetic Field

Dynamics of magnetic vortex core switching in Fe nanodisks by applying in-plane magnetic field pulse

2007 ◽  
Vol 102 (10) ◽  
pp. 103904 ◽  
Author(s):  
Q. F. Xiao ◽  
J. Rudge ◽  
E. Girgis ◽  
J. Kolthammer ◽  
B. C. Choi ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Vortex Core ◽  
Magnetic Vortex ◽  
Magnetic Field Pulse ◽  
Field Pulse

scholarly journals Shifting and Pinning of a Magnetic Vortex Core in a Permalloy Dot by a Magnetic Field

2005 ◽  
Vol 95 (23) ◽  
Author(s):  
Thomas Uhlig ◽  
M. Rahm ◽  
Christian Dietrich ◽  
Rainer Höllinger ◽  
Martin Heumann ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Vortex Core ◽  
Magnetic Vortex

Subnanosecond Radial Vortex Core Polarity Reversal Using Linearly Attenuated Perpendicular Magnetic Field

2018 ◽  
Vol 9 ◽  
pp. 1-4 ◽  
Author(s):  
Cheng Li ◽  
Li Cai ◽  
Xiaokuo Yang ◽  
Huanqing Cui ◽  
Sen Wang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Vortex Core ◽  
Polarity Reversal ◽  
Perpendicular Magnetic Field

Nanocavity-Mediated Fast Magnetic Vortex Core In-Situ Switching by Local Magnetic Field

2021 ◽  
Vol 38 (12) ◽  
pp. 127501
Author(s):  
Xiao-Ping Ma ◽  
Hongguo Yang ◽  
Changfeng Li ◽  
Cheng Song ◽  
Hong-Guang Piao
Keyword(s):  
Magnetic Field ◽  
Vortex Core ◽  
Switching Time ◽  
Magnetic Vortex ◽  
Local Magnetic Field ◽  
Fast Switching ◽  
Low Field ◽  
Perpendicular Field ◽  
Data Reading

Fast in situ switching of magnetic vortex core in a ferromagnetic nanodisk assisted by a nanocavity, with diameter comparable to the dimension of a vortex core, is systematically investigated by changing the strength as well as the diameter of the effective circular region of the applied magnetic field. By applying a local magnetic field within a small area at the nanodisk center, fast switching time of about 35 ps is achieved with relatively low field strength (70 mT) which is beneficial for fast data reading and writing. The reason for this phenomenon is that the magnetic spins around the nanocavity is aligned along the cavity wall due to the shape anisotropy when the perpendicular field is applied, which deepens the dip around the vortex core, and thus facilitates the vortex core switching.

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