‘Giant’ magnetoresistance observed in single layer Co-Ag alloy films

Barnard, J. A.; Waknis, A.; Tan, Ming; Haftek, E.; Parker, M.R.; Watson, Mark L.

doi:10.1016/0304-8853(92)90257-o

Cited by 139 publications

(18 citation statements)

References 7 publications

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“…[5][6][7] The magnetic moments of the grains are aligned at high fields and misaligned at the coercive field leading to GMR in exact analogy to GMR in multilayers. This observation demonstrated that a layered structure is not a necessary condition for GMR, but a potential feature of any system containing F regions whose relative magnetic orientation may be externally manipulated.…”

Section: Introductionmentioning

confidence: 98%

Correlation between the structural and transport properties of as-grown epitaxial phase-separated Co-Ag thin films

et al. 1996

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Giant magnetoresistive Co-Ag granular films are prepared by molecular beam epitaxy at three different temperatures with cobalt concentrations ranging from 30 to 80 at. %. The structural properties of these films are studied using a variety of diffraction techniques and real space probes. Magnetization and magnetotransport measurements are carried out at room temperature. Correlating the structural and magnetotransport properties reveals that the spin diffusion length strongly affects the amplitude of the giant magnetoresistance, which is otherwise dominated by the surface-to-volume ratio of the segregated magnetic precipitates.

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Section: Introductionmentioning

confidence: 98%

Correlation between the structural and transport properties of as-grown epitaxial phase-separated Co-Ag thin films

et al. 1996

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“…The giant magnetoresistance (GMR) effect in magnetic multilayers and subsequently in magnetic heterogeneous alloys with ferromagnetic granules embedded in nonmagnetic metals has been intensively studied over the last 10 years [1][2][3][4][5][6][7][8]. In particular, the CoAg granular films, exhibiting the largest GMR value at room temperature, were extensively investigated [1,4,8,[9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Structural and magnetic properties of Al doped Co–Ag granular films: temperature dependence of magnetoresistance

Öksüzoğlu

Elmalı

Henn

et al. 2004

Journal of Magnetism and Magnetic Materials

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“…Those systems, which include Cu-Co, 1-3 Cu-Fe, 2 Co-Ag 4,5 Fe-Ni-Ag, 6,7 and Fe-Co-Ag 8 alloys, exhibit giantmagnetoresistance ͑GMR͒ effects 1,2 and have interesting potential applications in the construction of magnetic reading heads and sensors.…”

Section: Introductionmentioning

confidence: 99%

Magnetic coupling in metallic granular systems

1996

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The coupling between magnetic clusters in granular metals is investigated and the relative importance of the Ruderman-Kittel-Kasuya-Yosida and classical dipolar interactions is discussed. It is shown that beyond a certain critical cluster size, the coupling is entirely dominated by the dipolar term, leading to an antiferromagnetic bias. Numerical results for Cu 1Ϫx Co x alloys indicate that such a critical value corresponds to clusters of about Nϭ100 Co atoms. The importance of those results to the understanding of the giant-magnetoresistance effect in granular materials is pointed out. ͓S0163-1829͑96͒50134-7͔

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‘Giant’ magnetoresistance observed in single layer Co-Ag alloy films

Cited by 139 publications

References 7 publications

Correlation between the structural and transport properties of as-grown epitaxial phase-separated Co-Ag thin films

Correlation between the structural and transport properties of as-grown epitaxial phase-separated Co-Ag thin films

Structural and magnetic properties of Al doped Co–Ag granular films: temperature dependence of magnetoresistance

Magnetic coupling in metallic granular systems

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