Journal
JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 55, Issue 44, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1361-6463/ac8ebb
Keywords
anisotropic magnetoresistance; CoFeB; CuIr; IrMn; magnetic multilayers; planar Hall effect; spin hall angle
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This study investigates the effects of Pt and CuIr spacer layer thicknesses on the magnetic and electrical properties of exchange biased multilayers. The results show unexpected behavior in terms of exchange bias, anisotropic magneto-resistance voltage and planar Hall effect voltage when using a CuIr spacer layer instead of a Pt spacer layer, which is explained by layer interdiffusion between CuIr and IrMn layers.
In this study, it was investigated how the magnetic and electrical properties of the exchange biased multilayers are affected by the Pt and CuIr spacer layer thicknesses. For this purpose, CoFeB/NM/IrMn sample stacks which can be used as magnetic field sensors based on the anisotropic magnetoresistance and planar Hall effect (PHE) were designed. The magnetic and electrical results showed an unexpected behavior to the variations in the spacer layer thickness when a CuIr spacer layer was used instead of a Pt spacer layer in terms of the properties of exchange bias, anisotropic magneto-resistance voltage and PHE voltage. This phenomenon is explained by the layer interdiffusion between CuIr and IrMn layers.
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