Dependence of switching current distribution on current pulse width of current-induced magnetization switching in MgO-based magnetic tunnel junction

被引：8

作者：

Morota, Misako ^{[1
]}

Fukushima, Akio ^{[1
]}

Kubota, Hitoshi ^{[1
]}

Yakushiji, Kay ^{[1
]}

Yuasa, Shinji ^{[1
]}

Ando, Koji ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, NeRI, Tsukuba, Ibaraki 3058568, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2008年 / 103卷 / 07期

关键词：

D O I：

10.1063/1.2832435

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Current-induced magnetization switching in an MgO-based magnetic tunnel junction (MTJ) was experimentally studied. Probabilistic distribution of a switching current was measured at various current pulse widths from 5 mu s to 100 ms. A thermal stability parameter Delta of a free-layer magnetic moment and an intrinsic switching current density J(c0) of the MTJ were evaluated from the switching current distribution using a thermal activation model. The estimated Delta and J(c0) were approximately independent of the pulse width and were in good agreement with the values estimated from the pulse-width dependence of the switching current density, demonstrating the validity of the thermal activation model. (c) 2008 American Institute of Physics.

引用

页数：3

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