Switching phase diagrams of current-induced magnetization switching in asymmetric MgO-based magnetic tunnel junctions

Seung Young Park, Jae Ho Han, Se Chung Oh, Jang Eun Lee, Kyung Tae Nam, Hyun Woo Lee, Younghun Jo, Kyoung Jin Lee

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We investigated the effect of the free-layer composition and the pattern size of magnetic cell on current-induced magnetization switching in asymmetric MgO-based magnetic tunnel junctions. We found that the normalized switching phase diagrams (SPDs) measured at low temperature are mostly determined by the material composition of ferromagnetic electrodes but are not much sensitive to the intrinsic energy barrier and the anisotropy field of the sample. This experimental result indicates that the normalized SPD can be used to study the fundamental characteristics of spin-transfer torque.

Original languageEnglish
Article number064008
JournalJournal of Physics D: Applied Physics
Volume44
Issue number6
DOIs
Publication statusPublished - 2011 Feb 16

Fingerprint

Tunnel junctions
Induced currents
tunnel junctions
Phase diagrams
Magnetization
phase diagrams
magnetization
Energy barriers
Chemical analysis
torque
Anisotropy
Torque
anisotropy
Electrodes
electrodes
cells
Temperature
energy

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

Cite this

Switching phase diagrams of current-induced magnetization switching in asymmetric MgO-based magnetic tunnel junctions. / Park, Seung Young; Han, Jae Ho; Oh, Se Chung; Lee, Jang Eun; Nam, Kyung Tae; Lee, Hyun Woo; Jo, Younghun; Lee, Kyoung Jin.

In: Journal of Physics D: Applied Physics, Vol. 44, No. 6, 064008, 16.02.2011.

Research output: Contribution to journalArticle

Park, Seung Young ; Han, Jae Ho ; Oh, Se Chung ; Lee, Jang Eun ; Nam, Kyung Tae ; Lee, Hyun Woo ; Jo, Younghun ; Lee, Kyoung Jin. / Switching phase diagrams of current-induced magnetization switching in asymmetric MgO-based magnetic tunnel junctions. In: Journal of Physics D: Applied Physics. 2011 ; Vol. 44, No. 6.
@article{d385475fd03748a791fded3d09a741eb,
title = "Switching phase diagrams of current-induced magnetization switching in asymmetric MgO-based magnetic tunnel junctions",
abstract = "We investigated the effect of the free-layer composition and the pattern size of magnetic cell on current-induced magnetization switching in asymmetric MgO-based magnetic tunnel junctions. We found that the normalized switching phase diagrams (SPDs) measured at low temperature are mostly determined by the material composition of ferromagnetic electrodes but are not much sensitive to the intrinsic energy barrier and the anisotropy field of the sample. This experimental result indicates that the normalized SPD can be used to study the fundamental characteristics of spin-transfer torque.",
author = "Park, {Seung Young} and Han, {Jae Ho} and Oh, {Se Chung} and Lee, {Jang Eun} and Nam, {Kyung Tae} and Lee, {Hyun Woo} and Younghun Jo and Lee, {Kyoung Jin}",
year = "2011",
month = "2",
day = "16",
doi = "10.1088/0022-3727/44/6/064008",
language = "English",
volume = "44",
journal = "Journal Physics D: Applied Physics",
issn = "0022-3727",
publisher = "IOP Publishing Ltd.",
number = "6",

}

TY - JOUR

T1 - Switching phase diagrams of current-induced magnetization switching in asymmetric MgO-based magnetic tunnel junctions

AU - Park, Seung Young

AU - Han, Jae Ho

AU - Oh, Se Chung

AU - Lee, Jang Eun

AU - Nam, Kyung Tae

AU - Lee, Hyun Woo

AU - Jo, Younghun

AU - Lee, Kyoung Jin

PY - 2011/2/16

Y1 - 2011/2/16

N2 - We investigated the effect of the free-layer composition and the pattern size of magnetic cell on current-induced magnetization switching in asymmetric MgO-based magnetic tunnel junctions. We found that the normalized switching phase diagrams (SPDs) measured at low temperature are mostly determined by the material composition of ferromagnetic electrodes but are not much sensitive to the intrinsic energy barrier and the anisotropy field of the sample. This experimental result indicates that the normalized SPD can be used to study the fundamental characteristics of spin-transfer torque.

AB - We investigated the effect of the free-layer composition and the pattern size of magnetic cell on current-induced magnetization switching in asymmetric MgO-based magnetic tunnel junctions. We found that the normalized switching phase diagrams (SPDs) measured at low temperature are mostly determined by the material composition of ferromagnetic electrodes but are not much sensitive to the intrinsic energy barrier and the anisotropy field of the sample. This experimental result indicates that the normalized SPD can be used to study the fundamental characteristics of spin-transfer torque.

UR - http://www.scopus.com/inward/record.url?scp=79551697340&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79551697340&partnerID=8YFLogxK

U2 - 10.1088/0022-3727/44/6/064008

DO - 10.1088/0022-3727/44/6/064008

M3 - Article

VL - 44

JO - Journal Physics D: Applied Physics

JF - Journal Physics D: Applied Physics

SN - 0022-3727

IS - 6

M1 - 064008

ER -