GMR effect in CuCo annealed melt-spun ribbons

N. Murillo; H. Grande; I. Etxeberria; J. J. Del Val; J. González; S. Arana; F. J. Gracia

doi:10.1166/jnn.2004.140

GMR effect in CuCo annealed melt-spun ribbons

N. Murillo
, H. Grande
, I. Etxeberria
, J. J. Del Val
, J. González^*
, S. Arana
, F. J. Gracia

^*Corresponding author for this work

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

3 Citations (Scopus)

Abstract

A thorough microstructural and magnetic analysis has been performed on as-quenched and annealed (475 and 525 °C, 1 hour) melt-spun Cu _100-xCo _x (x = 10 and 15) granular alloys, presenting a giant magnetoresistance (GMR) effect. The annealed samples are inhomogeneous with respect to the Co-particle sizes and interparticles distances and, therefore, these particles present superparamagnetic and ferromagnetic behaviours, which determine the GMR response. The samples x = 15, treated at 525°C during 1 hour, presented the best GMR ratio (≈5% at room temperature to be the highest value approaching roughly to the saturation under an applied magnetic field of 15 KOe), with the coexistence of Co-particles with both kinds of magnetic behaviour.

Original language	English
Article number	006
Pages (from-to)	1056-1061
Number of pages	6
Journal	Journal of Nanoscience and Nanotechnology
Volume	4
Issue number	8
DOIs	https://doi.org/10.1166/jnn.2004.140
Publication status	Published - Nov 2004
Externally published	Yes

Keywords

Hysteresis Loop
Magnetoresistance
Nanogranular Alloys
X-ray Diffraction

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10.1166/jnn.2004.140

Cite this

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title = "GMR effect in CuCo annealed melt-spun ribbons",

abstract = "A thorough microstructural and magnetic analysis has been performed on as-quenched and annealed (475 and 525 °C, 1 hour) melt-spun Cu 100-xCo x (x = 10 and 15) granular alloys, presenting a giant magnetoresistance (GMR) effect. The annealed samples are inhomogeneous with respect to the Co-particle sizes and interparticles distances and, therefore, these particles present superparamagnetic and ferromagnetic behaviours, which determine the GMR response. The samples x = 15, treated at 525°C during 1 hour, presented the best GMR ratio (≈5\% at room temperature to be the highest value approaching roughly to the saturation under an applied magnetic field of 15 KOe), with the coexistence of Co-particles with both kinds of magnetic behaviour.",

keywords = "Hysteresis Loop, Magnetoresistance, Nanogranular Alloys, X-ray Diffraction",

author = "N. Murillo and H. Grande and I. Etxeberria and \{Del Val\}, \{J. J.\} and J. Gonz{\'a}lez and S. Arana and Gracia, \{F. J.\}",

year = "2004",

month = nov,

doi = "10.1166/jnn.2004.140",

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volume = "4",

pages = "1056--1061",

journal = "Journal of Nanoscience and Nanotechnology",

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TY - JOUR

T1 - GMR effect in CuCo annealed melt-spun ribbons

AU - Murillo, N.

AU - Grande, H.

AU - Etxeberria, I.

AU - Del Val, J. J.

AU - González, J.

AU - Arana, S.

AU - Gracia, F. J.

PY - 2004/11

Y1 - 2004/11

N2 - A thorough microstructural and magnetic analysis has been performed on as-quenched and annealed (475 and 525 °C, 1 hour) melt-spun Cu 100-xCo x (x = 10 and 15) granular alloys, presenting a giant magnetoresistance (GMR) effect. The annealed samples are inhomogeneous with respect to the Co-particle sizes and interparticles distances and, therefore, these particles present superparamagnetic and ferromagnetic behaviours, which determine the GMR response. The samples x = 15, treated at 525°C during 1 hour, presented the best GMR ratio (≈5% at room temperature to be the highest value approaching roughly to the saturation under an applied magnetic field of 15 KOe), with the coexistence of Co-particles with both kinds of magnetic behaviour.

AB - A thorough microstructural and magnetic analysis has been performed on as-quenched and annealed (475 and 525 °C, 1 hour) melt-spun Cu 100-xCo x (x = 10 and 15) granular alloys, presenting a giant magnetoresistance (GMR) effect. The annealed samples are inhomogeneous with respect to the Co-particle sizes and interparticles distances and, therefore, these particles present superparamagnetic and ferromagnetic behaviours, which determine the GMR response. The samples x = 15, treated at 525°C during 1 hour, presented the best GMR ratio (≈5% at room temperature to be the highest value approaching roughly to the saturation under an applied magnetic field of 15 KOe), with the coexistence of Co-particles with both kinds of magnetic behaviour.

KW - Hysteresis Loop

KW - Magnetoresistance

KW - Nanogranular Alloys

KW - X-ray Diffraction

UR - https://www.scopus.com/pages/publications/11244308370

U2 - 10.1166/jnn.2004.140

DO - 10.1166/jnn.2004.140

M3 - Article

C2 - 15656202

AN - SCOPUS:11244308370

SN - 1533-4880

VL - 4

SP - 1056

EP - 1061

JO - Journal of Nanoscience and Nanotechnology

JF - Journal of Nanoscience and Nanotechnology

IS - 8

M1 - 006

ER -

GMR effect in CuCo annealed melt-spun ribbons

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Keywords

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