Magnetic properties and giant magnetoresistance in melt-spun Co-Cu alloys

R. H. Yu; X. X. Zhang; J. Tejada; M. Knobel; P. Tiberto; P. Allia

doi:10.1063/1.360613

Magnetic properties and giant magnetoresistance in melt-spun Co-Cu alloys

R. H. Yu^*, X. X. Zhang, J. Tejada, M. Knobel, P. Tiberto, P. Allia

^*Corresponding author for this work

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

54 Scopus citations

Abstract

Magnetic, structural, and transport properties of as-quenched and annealed Co₁₀Cu₉₀ samples have been investigated using x-ray diffraction and a SQUID magnetometer. The largest value of MR change was observed for the as-quenched sample annealed at 450°C for 30 min. The magnetic and transport properties closely correlate with the microstructure, mainly with Co magnetic particle size and its distribution. For thermal annealing the as-quenched samples below 600°C, the Co particle diameters increase from 4.0 to 6.0 nm with a magnetoresistance (MR) drop from 33.0% to 5.0% at 10 K. Comparison with the theory indicates that the interfacial electron spin-dependent scattering mechanism correlates with GMR for Co particle diameters up to about 6.0 nm.

Original language	English (US)
Pages (from-to)	392-397
Number of pages	6
Journal	Journal of Applied Physics
Volume	78
Issue number	1
DOIs	https://doi.org/10.1063/1.360613
State	Published - 1995
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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title = "Magnetic properties and giant magnetoresistance in melt-spun Co-Cu alloys",

abstract = "Magnetic, structural, and transport properties of as-quenched and annealed Co10Cu90 samples have been investigated using x-ray diffraction and a SQUID magnetometer. The largest value of MR change was observed for the as-quenched sample annealed at 450°C for 30 min. The magnetic and transport properties closely correlate with the microstructure, mainly with Co magnetic particle size and its distribution. For thermal annealing the as-quenched samples below 600°C, the Co particle diameters increase from 4.0 to 6.0 nm with a magnetoresistance (MR) drop from 33.0% to 5.0% at 10 K. Comparison with the theory indicates that the interfacial electron spin-dependent scattering mechanism correlates with GMR for Co particle diameters up to about 6.0 nm.",

author = "Yu, {R. H.} and Zhang, {X. X.} and J. Tejada and M. Knobel and P. Tiberto and P. Allia",

year = "1995",

doi = "10.1063/1.360613",

language = "English (US)",

volume = "78",

pages = "392--397",

journal = "Journal of Applied Physics",

issn = "0021-8979",

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TY - JOUR

T1 - Magnetic properties and giant magnetoresistance in melt-spun Co-Cu alloys

AU - Yu, R. H.

AU - Zhang, X. X.

AU - Tejada, J.

AU - Knobel, M.

AU - Tiberto, P.

AU - Allia, P.

PY - 1995

Y1 - 1995

N2 - Magnetic, structural, and transport properties of as-quenched and annealed Co10Cu90 samples have been investigated using x-ray diffraction and a SQUID magnetometer. The largest value of MR change was observed for the as-quenched sample annealed at 450°C for 30 min. The magnetic and transport properties closely correlate with the microstructure, mainly with Co magnetic particle size and its distribution. For thermal annealing the as-quenched samples below 600°C, the Co particle diameters increase from 4.0 to 6.0 nm with a magnetoresistance (MR) drop from 33.0% to 5.0% at 10 K. Comparison with the theory indicates that the interfacial electron spin-dependent scattering mechanism correlates with GMR for Co particle diameters up to about 6.0 nm.

AB - Magnetic, structural, and transport properties of as-quenched and annealed Co10Cu90 samples have been investigated using x-ray diffraction and a SQUID magnetometer. The largest value of MR change was observed for the as-quenched sample annealed at 450°C for 30 min. The magnetic and transport properties closely correlate with the microstructure, mainly with Co magnetic particle size and its distribution. For thermal annealing the as-quenched samples below 600°C, the Co particle diameters increase from 4.0 to 6.0 nm with a magnetoresistance (MR) drop from 33.0% to 5.0% at 10 K. Comparison with the theory indicates that the interfacial electron spin-dependent scattering mechanism correlates with GMR for Co particle diameters up to about 6.0 nm.

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DO - 10.1063/1.360613

M3 - Article

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SN - 0021-8979

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EP - 397

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 1

ER -

Magnetic properties and giant magnetoresistance in melt-spun Co-Cu alloys

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