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Modeling of the spin-transfer torque switching in FePt/MgO-based perpendicular magnetic tunnel junctions: A combined ab initio and micromagnetic simulation study
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10.1063/1.3615664
/content/aip/journal/apl/99/3/10.1063/1.3615664
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/3/10.1063/1.3615664
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Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) Illustration of a typical FePt/MgO-based perpendicular magnetized MTJ structure. (b) Unit cell of 3 monolayers of FePt on MgO in the total energy calculation. The vacuum layer between each slice is 12 Å; (c) uniaxial magnetic anisotropy constant K u as a function of the in-plane lattice constant in the supercell, which corresponds to 2, 3, 4, and 5 monolayers of FePt.

Image of FIG. 2.
FIG. 2.

(Color online) (a) Dependence of the critical switching current density on the magnetic anisotropy constant K u from both simulation and the analytical calculations. (b) P→AP and (c) AP→P magnetization switching time dependence on the applied current density for different values of perpendicular spin-torque factor ξ, where K u is chosen to be 1.17 × 107 and 4.74 × 107 erg/cm3, respectively.

Image of FIG. 3.
FIG. 3.

(Color online) Switching process dependence on the applied current densities (a) J = 2.08 and (b) J = 2.60 (in unit of 108 A/cm2). The two current densities have been marked by the pentacles in the inset of Fig. 2(a).

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/content/aip/journal/apl/99/3/10.1063/1.3615664
2011-07-22
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Modeling of the spin-transfer torque switching in FePt/MgO-based perpendicular magnetic tunnel junctions: A combined ab initio and micromagnetic simulation study
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/3/10.1063/1.3615664
10.1063/1.3615664
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