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Current-driven vortex formation in a magnetic multilayer ring

delete2009-02-23
delete20
PRE
AI
C
Chunghee Nam
B
B. G. Ng
F
Fernando Castaño
M
M. D. Mascaro
C
C. A. Ross *
DOI：10.1063/1.3085971delete
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Abstract

Abstract

En 中文
Current-driven domain wall (DW) motion has been studied in the NiFe layer of a Co/Cu/NiFe thin film ring using giant-magnetoresistance measurements in a four-point contact geometry. The NiFe layer is initially in an onion state configuration with two 180 degrees DWs. An electric current drives the walls around the ring so that they annihilate and the NiFe layer forms a DW-free vortex state. The direction of motion of the two DWs is determined by the current polarity, enabling the vortex chirality to be selected.
Keywords:
cobalt
copper
giant magnetoresistance
iron alloys
magnetic domain walls
magnetic multilayers
magnetic thin films
nickel alloys
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Key information extracted from the uploaded paper, including a brief overview, abstract, background, key highlights, visual analysis, and future outlook.

Journal

Applied Physics Letters cover
Applied Physics Letters
IF:
3.6
Papers:
10.4W
Citations:
17.8W

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No organization information available