CPP transport properties of Ni/Ru and Co90Fe10Cu interfaces

Do Kyun Kim; Yeon Sub Lee; Hoang Yen Thi Nguyen; Rakhi Acharyya; Reza Loloee; Kyung Ho Shin; Young Keun Kim; Byoung Chul Min; W. P. Pratt; Jack Bass

doi:10.1109/TMAG.2010.2045223

CPP transport properties of Ni/Ru and Co₉₀Fe₁₀Cu interfaces

Do Kyun Kim, Yeon Sub Lee, Hoang Yen Thi Nguyen, Rakhi Acharyya, Reza Loloee, Kyung Ho Shin, Young Keun Kim, Byoung Chul Min, W. P. Pratt, Jack Bass

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

2 Citations (Scopus)

Abstract

Using current-perpendicular-to-plane (CPP) magnetoresistance measurements, we derive values of twice the enhanced interface resistance, 2AR _F/N*, and the interface scattering asymmetry, γ_F/N, for the ferromagnetic/non-magnetic (F/N) pairs Ni/Ru and Co₉₀Fe₁₀Cu. For Ni/Ru, we find 2AR_Ni/Ru*= 1.7_-0.3^+0.4 Ω², similar to the value for Fe/Cr, but we estimate γ_Ni/Ru=0.15\pm 0.03, much smaller than the value for Fe/Cr or the asymmetry found for Ni(Ru) alloys. For Co ₉₀Fe₁₀ we find 2AR_CoFe/Cu*=1.1\pm 0.2 and γ_CoFe/Cu=0.8\pm 0.1 , both similar to the values for Co/Cu.

Original language	English
Article number	5467633
Pages (from-to)	1374-1377
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	46
Issue number	6
DOIs	https://doi.org/10.1109/TMAG.2010.2045223
Publication status	Published - 2010 Jun

Bibliographical note

Funding Information:
This research was supported in part by KIST, KRCF DRC, and by US NSF grant DMR 08-04126.

Keywords

CPP transport
CoFe/Cu
Giant magnetoresistance
Interfaces
Ni/Ru

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Access to Document

10.1109/TMAG.2010.2045223

Cite this

@article{939ade50d6074cba9f126f12a4ac8526,

title = "CPP transport properties of Ni/Ru and Co90Fe10Cu interfaces",

abstract = "Using current-perpendicular-to-plane (CPP) magnetoresistance measurements, we derive values of twice the enhanced interface resistance, 2AR F/N*, and the interface scattering asymmetry, γF/N, for the ferromagnetic/non-magnetic (F/N) pairs Ni/Ru and Co90Fe10Cu. For Ni/Ru, we find 2ARNi/Ru*= 1.7-0.3+0.4 Ω2, similar to the value for Fe/Cr, but we estimate γNi/Ru=0.15\pm 0.03, much smaller than the value for Fe/Cr or the asymmetry found for Ni(Ru) alloys. For Co 90Fe10 we find 2ARCoFe/Cu*=1.1\pm 0.2 and γCoFe/Cu=0.8\pm 0.1 , both similar to the values for Co/Cu.",

keywords = "CPP transport, CoFe/Cu, Giant magnetoresistance, Interfaces, Ni/Ru",

author = "Kim, {Do Kyun} and Lee, {Yeon Sub} and Nguyen, {Hoang Yen Thi} and Rakhi Acharyya and Reza Loloee and Shin, {Kyung Ho} and Kim, {Young Keun} and Min, {Byoung Chul} and Pratt, {W. P.} and Jack Bass",

note = "Funding Information: This research was supported in part by KIST, KRCF DRC, and by US NSF grant DMR 08-04126.",

year = "2010",

month = jun,

doi = "10.1109/TMAG.2010.2045223",

language = "English",

volume = "46",

pages = "1374--1377",

journal = "IEEE Transactions on Magnetics",

issn = "0018-9464",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "6",

}

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T1 - CPP transport properties of Ni/Ru and Co90Fe10Cu interfaces

AU - Kim, Do Kyun

AU - Lee, Yeon Sub

AU - Nguyen, Hoang Yen Thi

AU - Acharyya, Rakhi

AU - Loloee, Reza

AU - Shin, Kyung Ho

AU - Kim, Young Keun

AU - Min, Byoung Chul

AU - Pratt, W. P.

AU - Bass, Jack

N1 - Funding Information: This research was supported in part by KIST, KRCF DRC, and by US NSF grant DMR 08-04126.

PY - 2010/6

Y1 - 2010/6

N2 - Using current-perpendicular-to-plane (CPP) magnetoresistance measurements, we derive values of twice the enhanced interface resistance, 2AR F/N*, and the interface scattering asymmetry, γF/N, for the ferromagnetic/non-magnetic (F/N) pairs Ni/Ru and Co90Fe10Cu. For Ni/Ru, we find 2ARNi/Ru*= 1.7-0.3+0.4 Ω2, similar to the value for Fe/Cr, but we estimate γNi/Ru=0.15\pm 0.03, much smaller than the value for Fe/Cr or the asymmetry found for Ni(Ru) alloys. For Co 90Fe10 we find 2ARCoFe/Cu*=1.1\pm 0.2 and γCoFe/Cu=0.8\pm 0.1 , both similar to the values for Co/Cu.

AB - Using current-perpendicular-to-plane (CPP) magnetoresistance measurements, we derive values of twice the enhanced interface resistance, 2AR F/N*, and the interface scattering asymmetry, γF/N, for the ferromagnetic/non-magnetic (F/N) pairs Ni/Ru and Co90Fe10Cu. For Ni/Ru, we find 2ARNi/Ru*= 1.7-0.3+0.4 Ω2, similar to the value for Fe/Cr, but we estimate γNi/Ru=0.15\pm 0.03, much smaller than the value for Fe/Cr or the asymmetry found for Ni(Ru) alloys. For Co 90Fe10 we find 2ARCoFe/Cu*=1.1\pm 0.2 and γCoFe/Cu=0.8\pm 0.1 , both similar to the values for Co/Cu.

KW - CPP transport

KW - CoFe/Cu

KW - Giant magnetoresistance

KW - Interfaces

KW - Ni/Ru

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DO - 10.1109/TMAG.2010.2045223

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