Magnetic tunnel junctions using Co/Ni multilayer electrodes with perpendicular magnetic anisotropy
| Autor: | Ia. M. Lytvynenko, Thomas Hauet, Cyrile Deranlot, Stéphane Andrieu |
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| Přispěvatelé: | Sumy State University, Unité mixte de physique CNRS/Thales (UMPhy CNRS/THALES), THALES-Centre National de la Recherche Scientifique (CNRS), Institut Jean Lamour (IJL), Institut de Chimie du CNRS (INC)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Condensed matter physics Physics::Instrumentation and Detectors Stacking General Physics and Astronomy chemistry.chemical_element Amorphous solid Dipole Nickel Condensed Matter::Materials Science chemistry Electrode [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] Platinum Cobalt Layer (electronics) |
| Zdroj: | Journal of Applied Physics Journal of Applied Physics, American Institute of Physics, 2015, 117 (5), pp.053906. ⟨10.1063/1.4906843⟩ |
| ISSN: | 0021-8979 1089-7550 |
| DOI: | 10.1063/1.4906843⟩ |
| Popis: | Équipe 101 : Nanomagnétisme et électronique de spin; International audience; Magnetic and magneto-transport properties of amorphous Al2O3-based magnetic tunnel junctions (MTJ) having two Co/Ni multilayer electrodes exhibiting perpendicular magnetic anisotropy (PMA) are presented. An additional Co/Pt multilayer is required to maintain PMA in the top Co/Ni electrode. Slight stacking variations lead to dramatic magnetic changes due to dipolar interactions between the top and bottom electrodes. Tunnel magneto-resistance (TMR) of up to 8% at 300K is measured for the MTJ with two PMA electrodes. The TMR value increases when the top PMA electrode is replaced by an in-plane magnetized Co layer. These observations can be attributed to significant intermixing in the top Co/Ni electrode. |
| Databáze: | OpenAIRE |
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