Switching characteristics of NiFe free layer with respect to hard axis field

Young Woo Lee; Sang Min Yoon; Cheol Gi Kim; Chong Oh Kim

doi:10.1016/j.jmmm.2003.12.281

Switching characteristics of NiFe free layer with respect to hard axis field

Young Woo Lee, Sang Min Yoon, Cheol Gi Kim, Chong Oh Kim

Department of Physics and Chemistry

Chungnam National University

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

The switching characteristics of NiFe free layers is investigated with respect to hard axis field in magnetic tunnel junctions. An AC magnetic field is swept along easy axis with a Helmholtz coil. As the hard axis field increases, the coercivity and the squareness of magnetoresistance loops decrease. When the hard axis field is larger than ±16.5 Oe, the NiFe free layer is saturated in the hard direction and switching coercivity decreases to the constant value of 2.6 Oe. Switching loops of NiFe layer shift as the NiFe free layer is magnetized along the hard direction. This shift is induced by the stray field of the NiFe free layer.

Original language	English
Pages (from-to)	e1491-e1492
Journal	Journal of Magnetism and Magnetic Materials
Volume	272-276
Issue number	SUPPL. 1
DOIs	https://doi.org/10.1016/j.jmmm.2003.12.281
State	Published - May 2004

Keywords

Hard axis field
MTJ
NiFe
Switching

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10.1016/j.jmmm.2003.12.281

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title = "Switching characteristics of NiFe free layer with respect to hard axis field",

abstract = "The switching characteristics of NiFe free layers is investigated with respect to hard axis field in magnetic tunnel junctions. An AC magnetic field is swept along easy axis with a Helmholtz coil. As the hard axis field increases, the coercivity and the squareness of magnetoresistance loops decrease. When the hard axis field is larger than ±16.5 Oe, the NiFe free layer is saturated in the hard direction and switching coercivity decreases to the constant value of 2.6 Oe. Switching loops of NiFe layer shift as the NiFe free layer is magnetized along the hard direction. This shift is induced by the stray field of the NiFe free layer.",

keywords = "Hard axis field, MTJ, NiFe, Switching",

author = "Lee, {Young Woo} and Yoon, {Sang Min} and Kim, {Cheol Gi} and Kim, {Chong Oh}",

year = "2004",

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doi = "10.1016/j.jmmm.2003.12.281",

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volume = "272-276",

pages = "e1491--e1492",

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T1 - Switching characteristics of NiFe free layer with respect to hard axis field

AU - Lee, Young Woo

AU - Yoon, Sang Min

AU - Kim, Cheol Gi

AU - Kim, Chong Oh

PY - 2004/5

Y1 - 2004/5

N2 - The switching characteristics of NiFe free layers is investigated with respect to hard axis field in magnetic tunnel junctions. An AC magnetic field is swept along easy axis with a Helmholtz coil. As the hard axis field increases, the coercivity and the squareness of magnetoresistance loops decrease. When the hard axis field is larger than ±16.5 Oe, the NiFe free layer is saturated in the hard direction and switching coercivity decreases to the constant value of 2.6 Oe. Switching loops of NiFe layer shift as the NiFe free layer is magnetized along the hard direction. This shift is induced by the stray field of the NiFe free layer.

AB - The switching characteristics of NiFe free layers is investigated with respect to hard axis field in magnetic tunnel junctions. An AC magnetic field is swept along easy axis with a Helmholtz coil. As the hard axis field increases, the coercivity and the squareness of magnetoresistance loops decrease. When the hard axis field is larger than ±16.5 Oe, the NiFe free layer is saturated in the hard direction and switching coercivity decreases to the constant value of 2.6 Oe. Switching loops of NiFe layer shift as the NiFe free layer is magnetized along the hard direction. This shift is induced by the stray field of the NiFe free layer.

KW - Hard axis field

KW - MTJ

KW - NiFe

KW - Switching

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U2 - 10.1016/j.jmmm.2003.12.281

DO - 10.1016/j.jmmm.2003.12.281

M3 - Article

AN - SCOPUS:23144444410

SN - 0304-8853

VL - 272-276

SP - e1491-e1492

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - SUPPL. 1

ER -

Switching characteristics of NiFe free layer with respect to hard axis field

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Keywords

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