Synthetic Co50Pt50/Ru/CoFe hard-soft trilayer in spin valves

J. J. Qiu; K. B. Li; G. C. Han; Y. K. Zheng; Zaibing Guo; Y. H. Wu

doi:10.1016/j.jmmm.2006.01.047

Synthetic Co₅₀Pt₅₀/Ru/CoFe hard-soft trilayer in spin valves

J. J. Qiu^*, K. B. Li, G. C. Han, Y. K. Zheng, Zaibing Guo, Y. H. Wu

^*Corresponding author for this work

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

1 Scopus citations

Abstract

The influence of deposition power and seedlayer on the properties of hard magnet Co₅₀Pt₅₀ was studied. Co₅₀Pt₅₀(/Co₉₀Fe₁₀)/Ru/Co₉₀Fe₁₀ trilayer was used as pining/pinned layer in spin valves. The influences of different hard layer, soft layer and free layer on exchange bias, interlayer coupling, and magnetoresistance (MR) ratio were studied. Weak antiferromagnetic interlayer coupling was obtained by adjusting the thickness of hard and soft layers. MR of a spin valve with structure Cr2/CoFe0.5/CoPt4/CoFe0.5/Ru0.8/CoFe2.2/Cu2.05/CoFe2.6/Cu1.1/Ta1 reached 10.68% (unit in nm), which is comparable to those of IrMn-based synthetic spin valves. The increment of the coercivity of the free layer is mainly due to the static magnetic interaction between the hard layer and the free layer.

Original language	English (US)
Journal	Journal of Magnetism and Magnetic Materials
Volume	303
Issue number	2 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.jmmm.2006.01.047
State	Published - Jan 1 2006

Keywords

Coercivity
Exchange bias
Hard-soft trilayer
Interlayer coupling
Spin valve

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2006.01.047

Cite this

@article{14996273295844338de2cbc57338a8ed,

title = "Synthetic Co50Pt50/Ru/CoFe hard-soft trilayer in spin valves",

abstract = "The influence of deposition power and seedlayer on the properties of hard magnet Co50Pt50 was studied. Co50Pt50(/Co90Fe10)/Ru/Co90Fe10 trilayer was used as pining/pinned layer in spin valves. The influences of different hard layer, soft layer and free layer on exchange bias, interlayer coupling, and magnetoresistance (MR) ratio were studied. Weak antiferromagnetic interlayer coupling was obtained by adjusting the thickness of hard and soft layers. MR of a spin valve with structure Cr2/CoFe0.5/CoPt4/CoFe0.5/Ru0.8/CoFe2.2/Cu2.05/CoFe2.6/Cu1.1/Ta1 reached 10.68% (unit in nm), which is comparable to those of IrMn-based synthetic spin valves. The increment of the coercivity of the free layer is mainly due to the static magnetic interaction between the hard layer and the free layer.",

keywords = "Coercivity, Exchange bias, Hard-soft trilayer, Interlayer coupling, Spin valve",

author = "Qiu, {J. J.} and Li, {K. B.} and Han, {G. C.} and Zheng, {Y. K.} and Zaibing Guo and Wu, {Y. H.}",

year = "2006",

month = jan,

day = "1",

doi = "10.1016/j.jmmm.2006.01.047",

language = "English (US)",

volume = "303",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

number = "2 SPEC. ISS.",

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TY - JOUR

T1 - Synthetic Co50Pt50/Ru/CoFe hard-soft trilayer in spin valves

AU - Qiu, J. J.

AU - Li, K. B.

AU - Han, G. C.

AU - Zheng, Y. K.

AU - Guo, Zaibing

AU - Wu, Y. H.

PY - 2006/1/1

Y1 - 2006/1/1

N2 - The influence of deposition power and seedlayer on the properties of hard magnet Co50Pt50 was studied. Co50Pt50(/Co90Fe10)/Ru/Co90Fe10 trilayer was used as pining/pinned layer in spin valves. The influences of different hard layer, soft layer and free layer on exchange bias, interlayer coupling, and magnetoresistance (MR) ratio were studied. Weak antiferromagnetic interlayer coupling was obtained by adjusting the thickness of hard and soft layers. MR of a spin valve with structure Cr2/CoFe0.5/CoPt4/CoFe0.5/Ru0.8/CoFe2.2/Cu2.05/CoFe2.6/Cu1.1/Ta1 reached 10.68% (unit in nm), which is comparable to those of IrMn-based synthetic spin valves. The increment of the coercivity of the free layer is mainly due to the static magnetic interaction between the hard layer and the free layer.

AB - The influence of deposition power and seedlayer on the properties of hard magnet Co50Pt50 was studied. Co50Pt50(/Co90Fe10)/Ru/Co90Fe10 trilayer was used as pining/pinned layer in spin valves. The influences of different hard layer, soft layer and free layer on exchange bias, interlayer coupling, and magnetoresistance (MR) ratio were studied. Weak antiferromagnetic interlayer coupling was obtained by adjusting the thickness of hard and soft layers. MR of a spin valve with structure Cr2/CoFe0.5/CoPt4/CoFe0.5/Ru0.8/CoFe2.2/Cu2.05/CoFe2.6/Cu1.1/Ta1 reached 10.68% (unit in nm), which is comparable to those of IrMn-based synthetic spin valves. The increment of the coercivity of the free layer is mainly due to the static magnetic interaction between the hard layer and the free layer.

KW - Coercivity

KW - Exchange bias

KW - Hard-soft trilayer

KW - Interlayer coupling

KW - Spin valve

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U2 - 10.1016/j.jmmm.2006.01.047

DO - 10.1016/j.jmmm.2006.01.047

M3 - Article

AN - SCOPUS:33646265288

SN - 0304-8853

VL - 303

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 2 SPEC. ISS.

ER -