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Direct visualization of three-step magnetization reversal of nanopatterned spin-valve elements using off-axis electron holography
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10.1063/1.3123290
/content/aip/journal/apl/94/17/10.1063/1.3123290
http://aip.metastore.ingenta.com/content/aip/journal/apl/94/17/10.1063/1.3123290
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Reconstructed holographic phase images of Co/Cu/Py spin-valve slotted nanoring elements showing most common remanent configurations of onion state and flux closure with saturation fields parallel and perpendicular to the slot direction, respectively. Initial saturation direction from bottom-left to top-right. Colored bar shows phase in images ranging from 0 to . Equiphase contours represent phase shifts due to magnetic induction, with contour spacing of 0.2 rad.

Image of FIG. 2.
FIG. 2.

Three-step hysteresis loop for Co/Cu/Py spin-valve slotted nanoring element with applied magnetic field parallel to the slot direction. Insert schematics indicate different magnetic coupling between Co and Py layers with onion configurations during the hysteresis cycle.

Image of FIG. 3.
FIG. 3.

Reconstructed phase images of spin-valve element illustrating the magnetization configurations of corresponding states in the hysteresis loop of Fig. 2. Applied fields are parallel to the slot direction, horizontally from right to left for (a)–(d), and from left to right for (e)–(h).

Image of FIG. 4.
FIG. 4.

(a) Schematic hysteresis loop (solid line) after Fig. 2. Magnetic components separated to represent the individual behavior of: (b) Co (dashed line); and (c) Py (dotted line) layers.

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/content/aip/journal/apl/94/17/10.1063/1.3123290
2009-04-28
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Direct visualization of three-step magnetization reversal of nanopatterned spin-valve elements using off-axis electron holography
http://aip.metastore.ingenta.com/content/aip/journal/apl/94/17/10.1063/1.3123290
10.1063/1.3123290
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