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Large magnetoresistance with low saturation fields in magnetic/magnetic superlattices (1994)

Gallego, J. M. ; Lederman, D. ; Moran, T. J. ; [et al.]

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 64 (1994), S. 2590-2592

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ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: Ni/Co multilayers grown by molecular beam epitaxy are found to exhibit a magnetoresistance ΔR/R at liquid helium temperature as large as 8.2%, with saturation fields ΔH≈22 Oe and a sensitivity (ΔR/R)/(2ΔH)≈0.19% Oe−1. The highest room temperature sensitivity obtained to date in this system is 0.18% Oe−1 and at 4.2 K is 0.29% Oe−1. This demonstrates that high values of the sensitivity can be achieved in multilayers in which both components are ferromagnetic. The magnetoresistance and saturation field can be tuned by the superlattice and growth parameters.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.111535

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