Skip to Main content Skip to Navigation
Journal articles

Influence of magnetic electrodes thicknesses on the transport properties of magnetic tunnel junctions with perpendicular anisotropy

Abstract : The influence of the bottom and top magnetic electrodes thicknesses on both perpendicular anisotropy and transport properties is studied in (Co/Pt)/Ta/CoFeB/MgO/FeCoB/Ta magnetic tunnel junctions. By carefully investigating the relative magnetic moment of the two electrodes as a function of their thicknesses, we identify and quantify the presence of magnetically dead layers, likely localized at the interfaces with Ta, that is, 0.33 nm for the bottom electrode and 0.60 nm for the top one. Critical thicknesses (spin-reorientation transitions) are determined as 1.60 and 1.65 nm for bottom and top electrodes, respectively. The tunnel magnetoresistance ratio reaches its maximum value, as soon as both effective (corrected from dead layer) electrode thicknesses exceed 0.6 nm
Document type :
Journal articles
Complete list of metadatas

Cited literature [20 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-02131723
Contributor : Antoine Chavent <>
Submitted on : Thursday, May 16, 2019 - 3:29:27 PM
Last modification on : Wednesday, November 4, 2020 - 3:41:31 PM

File

Cuchet_thickness_APL_2014.pdf
Publisher files allowed on an open archive

Identifiers

Collections

Citation

Léa Cuchet, Bernard Rodmacq, Stéphane Auffret, Ricardo Sousa, Bernard Dieny. Influence of magnetic electrodes thicknesses on the transport properties of magnetic tunnel junctions with perpendicular anisotropy. Applied Physics Letters, American Institute of Physics, 2014, 105 (5), pp.052408. ⟨10.1063/1.4892450⟩. ⟨hal-02131723⟩

Share

Metrics

Record views

279

Files downloads

890