Current-induced domain-wall motion in patterned nanowires with various Gd-Fe compositions for magneto-optical light modulator applications

Current-induced domain-wall motion in patterned nanowires with various Gd-Fe compositions for magneto-optical light modulator applications

We have fabricated nanowires with various compositions of Gdx-Fe1−x and evaluated current-induced domain-wall (DW) motion for magneto-optical light modulator application. Successful DW expansion and shrinkage according to the direction of current injection using two nanomagnets aligned in an anti-pa...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics Vol. 57; no. 9S2; pp. 9 - 12
Main Authors: Aoshima, Kenichi, Ebisawa, Ryo, Funabashi, Nobuhiko, Kuga, Kiyoshi, Machida, Kenji
Format: Journal Article
Language:English
Published: Tokyo The Japan Society of Applied Physics 01-09-2018
Japanese Journal of Applied Physics
Subjects:
Angular momentum
Angular velocity
Compensation
Composition
Current injection
Gadolinium
Iron
Light modulators
Magneto-optics
Nanowires
Shrinkage
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Description
Summary:We have fabricated nanowires with various compositions of Gdx-Fe1−x and evaluated current-induced domain-wall (DW) motion for magneto-optical light modulator application. Successful DW expansion and shrinkage according to the direction of current injection using two nanomagnets aligned in an anti-parallel configuration. The fastest DW velocity was obtained with Gd22.7Fe77.3, which is slightly Fe richer than the magnetization compensation composition. This composition that gave the highest DW velocity was attributed to the angular momentum compensation composition in Gd-Fe, which is slightly Fe richer than the compensation composition.
ISSN:0021-4922
1347-4065
DOI:10.7567/JJAP.57.09TC03