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Micromagnetic study of current-pulse-induced magnetization switching in magnetic tunnel junctions with antiferromagnetically and ferromagnetically coupled synthetic free layers
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10.1063/1.3664225
/content/aip/journal/apl/99/22/10.1063/1.3664225
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/22/10.1063/1.3664225
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Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) Schematic of MTJ with synthetic free layer. Calculated MR loops of SyAF- and SyF-free layer MTJs with M2 thickness of (b) 1.5 nm, and (c) 4 nm. Arrows show magnetic configurations of SyAF- and SyF-free layer MTJs

Image of FIG. 2.
FIG. 2.

(Color online) M2 thickness dependence of J c for SyAF-and SyF-free layer MTJs. Vortex formation occurred in M2 layer over 3.2 nm thick.

Image of FIG. 3.
FIG. 3.

(Color) (a) Time evolution of normalized resistance of SyAF-free layer MTJ (M2: 4 nm) for two different switching currents: J c = 38 MA/cm2 (switched) and J c = 37 MA/cm2 (un-switched). Corresponding transient magnetization configurations are represented by colored arrows at 1.25 ns for (b) J c = 38 MA/cm2 and (c) J c = 37 MA/cm2. The direction of the arrows indicate in-plane component of magnetization vectors and color code corresponds to 〈my〉 components. Counterclockwise vortex formation was observed at M2 layer of switched MTJ.

Image of FIG. 4.
FIG. 4.

(Color online) (a) Time evolution of long-axis magnetization component of SyAF- and SyF-free layer MTJs during 250 °C annealing. (b) Magnitude of magnetization fluctuations at room temperature and 250 °C.

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/content/aip/journal/apl/99/22/10.1063/1.3664225
2011-11-28
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Micromagnetic study of current-pulse-induced magnetization switching in magnetic tunnel junctions with antiferromagnetically and ferromagnetically coupled synthetic free layers
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/22/10.1063/1.3664225
10.1063/1.3664225
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