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Tunnel Magnetoresistance in Self-Assemblies of Exchange Coupled Core/Shell Nanoparticles

We report the precise control of tunneling magnetoresistance (TMR) in devices of self-assembled core/shell Fe$_3$O$_4$/Co$_{1-x}$Zn$_x$Fe$_2$O$_4$ nanoparticles ($0\leq x\leq 1$). Adjusting the magnetic anisotropy through the content of Co$^{2+}$ in the shell, provides an accurate tool to control the switching field between the bistable states of the TMR. In this way, different combinations of soft/hard and hard/soft core/shell configurations can be envisaged for optimizing devices with the required magnetotransport response.

preprint2020arXivOpen access
Fernando FabrisEnio Lima Jr.Cynthia QuinterosLucas NenerMara GranadaMartín SirenaRoberto D. ZyslerHoracio E. TroianiVíctor LeboránFrancisco RivadullaElin L. Winkler
cond-mat.mes-hall
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Open access11 authors1 topic
Imported metadata coverageMissing code, dataset, citation and institution fields are tracked without dominating the paper.Details
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Fernando FabrisEnio Lima Jr.Cynthia QuinterosLucas NenerMara GranadaMartín SirenaRoberto D. ZyslerHoracio E. TroianiVíctor LeboránFrancisco RivadullaElin L. Winkler

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