Journal
APPLIED PHYSICS LETTERS
Volume 92, Issue 23, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2943151
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Three-dimensional numerical calculations based on the finite element method are performed to calculate the increase of temperature caused by Joule heating during the current-induced magnetization switching of an MgO-based magnetic tunnel junction. The increase of temperature is found to be significantly large (the maximum being 145 K) at critical conditions for the current-induced magnetization switching. The temperature increase also differs greatly, depending on the critical condition, requiring a correction in calculating the thermal stability parameter using the Slonczewski equation. After the correction, the thermal stability parameter increases substantially from 67 to 76. (C) 2008 American Institute of Physics.
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