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360° domain wall generation in the soft layer of magnetic tunnel junctions
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View: Figures


Image of FIG. 1.
FIG. 1.

XMCD-PEEM images of four ellipses recorded at (a) the Co and at (b) the Ni edges. The photon incidence direction, given by the black arrow, is aligned along the ellipse long axis. The white and black contrasts correspond to magnetization components aligned along the long ellipse axis, parallel or antiparallel to the saturating field applied along the long ellipse axis.

Image of FIG. 2.
FIG. 2.

[(a) and (b)] XMCD-PEEM images of two ellipses measured at the Ni edge with the photon incidence direction, given by the black arrow, aligned along the ellipse short axis after field saturation along the long ellipse axis. The gray level distribution corresponds to the scalar projection of the local magnetization with respect to the light incidence. (c) OOMMF simulation. The gray scale corresponds to the magnetization component along the short axis direction. (d) Sketches representing the two possible 360° DWs either CW or CCW. (e) Experimental and simulated intensity profiles across a 360° DW.

Image of FIG. 3.
FIG. 3.

XMCD-PEEM images of the same ellipses recorded after the two cycles of identical field history. The ellipses have been imaged with the incoming light aligned along the short ellipse axis (black arrow) in order to highlight the magnetic structure of the DWs.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: 360° domain wall generation in the soft layer of magnetic tunnel junctions