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The cross-sectional view of the MTJ nanopillar investigated in this work. The original multilayer stack is transformed into the simpler structure consisting of the “effective” layers: layer I , layer II , and layer III .
The increase of temperature as a function of the time of applied current (up to ) obtained at three different current densities of 7.5, 7.8, and . The arrows indicate the critical pulse widths corresponding to the respective critical current densities.
The results for the critical current density as a function of . The original results reported in the literature (Ref. 13) are indicated by squares, while the recalculated results (that take into account the Joule heating effect during CIMS) are denoted by triangles. Solid lines are the fit of the results into the Slonczewski equation, from which the thermal stability parameter can be extracted.
The experimental results for the critical conditions reported in the literature (Ref. 13). The critical conditions in the short pulse width range from to , which were extrapolated from the original results by using the Slonczewski equation, are also given. Additionally, the values of calculated at the respective critical conditions are given.
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