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 to...
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| creator | Fabris, Fernando Lima, Enio Quinteros, Cynthia Nener, Lucas Granada, Mara Sirena, Martín Zysler, Roberto D Troiani, Horacio E Leborán, Víctor Rivadulla, Francisco Winkler, Elin L |
| description | 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. |
| doi_str_mv | 10.48550/arxiv.2005.10771 |
| format | Article |
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| subjects | Cobalt Core-shell particles Iron Magnetic anisotropy Magnetoresistance Magnetoresistivity Nanoparticles Physics - Mesoscale and Nanoscale Physics Self-assembly Tunnel magnetoresistance |
| title | Tunnel Magnetoresistance in Self-Assemblies of Exchange Coupled Core/Shell Nanoparticles |
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