Giant magnetoresistance studies in (Fe,Co)-Ag films

Tsoukatos, A.; Wei, Hong; Hadjipanayis, G. C.; Unruh, Karl; Li, Z. G.

doi:10.1063/1.353685

Cited by 47 publications

(10 citation statements)

References 14 publications

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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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Section: Introductionmentioning

confidence: 99%

Magnetic coupling in metallic granular systems

1996

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“…Furthermore, multidomain particles can arise and dipole interactions between neighboring ferromagnetic particles become more important. Finally, particles form a large connecting network with ferromagnetic domains at the percolation threshold of 55% and only an anisotropic magnetoresistance (AMR) is observable [ 93 , 94 , 95 , 97 , 98 , 99 , 100 , 101 , 102 , 103 , 104 ].…”

Section: Gmr Systemsmentioning

confidence: 99%

Giant Magnetoresistance: Basic Concepts, Microstructure, Magnetic Interactions and Applications

Ennen

Kappe

Rempel

et al. 2016

Sensors

148

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The giant magnetoresistance (GMR) effect is a very basic phenomenon that occurs in magnetic materials ranging from nanoparticles over multilayered thin films to permanent magnets. In this contribution, we first focus on the links between effect characteristic and underlying microstructure. Thereafter, we discuss design criteria for GMR-sensor applications covering automotive, biosensors as well as nanoparticular sensors.

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“…Magnetic properties of transition metals can be altered and their stability can be improved by alloying them with noble metals. Nanocrystalline Fe-Cu, Fe-Ag, Co-Ag, etc., exhibit higher anisotropy and hence show greater GMR [1][2][3][4]. At the same time, systems like Fe-Ag and Co-Ag are thermally immiscible as per their phase diagrams under equilibrium conditions [5,6].…”

Section: Introductionmentioning

confidence: 99%