Increase of temperature due to Joule heating during current-induced magnetization switching of an MgO-based magnetic tunnel junction

D. H. Lee, Sang Ho Lim

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number233502
JournalApplied Physics Letters
Volume92
Issue number23
DOIs
Publication statusPublished - 2008 Jun 20

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Joule heating
tunnel junctions
magnetization
thermal stability
temperature
finite element method

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

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AB - 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.

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