Magnetic tunnel junctions using Co/Ni multilayer electrodes with perpendicular magnetic anisotropy

Magnetic tunnel junctions using Co/Ni multilayer electrodes with perpendicular magnetic anisotropy

Second order anisotropy contribution in perpendicular magnetic tunnel junctions

Hard-axis magnetoresistance loops were measured on perpendicular magnetic tunnel junction pillars of diameter ranging from 50 to 150 nm. By fitting these loops to an analytical model, the effective anisotropy fields in both free and reference layers were derived and their variations in temperature range between 340 K and 5 K were determined. It is found that a second-order anisotropy term of th...

Magnetic Properties of Exchange-Biased Multilayer With Perpendicular Magnetic Anisotropy

Perpendicular exchange-biased and multilayers have been fabricated, changing the thickness of the cobalt that is next to the IrMn layer. The crystal structure, interface roughness and magnetic properties were characterized by X-ray diffraction (XRD), X-ray reflectivity (XRR), atomic force microscopy (AFM) and extraordinary Hall Effect (EHE). The multilayers are flat, and the roughness is about ...

Enhanced tunneling magnetoresistance and perpendicular magnetic anisotropy in Mo/CoFeB/MgO magnetic tunnel junctions

Articles you may be interested in Perpendicular magnetic anisotropy in Ta|Co40Fe40B20|MgAl2O4 structures and perpendicular CoFeB|MgAl2O4|CoFeB magnetic tunnel junction Appl. Large enhanced perpendicular magnetic anisotropy in CoFeB/MgO system with the typical Ta buffer replaced by an Hf layer

Magnetic Tunnel Junctions With Co:TiO Magnetic Semiconductor Electrodes

Spin-polarized tunneling is investigated in magnetic tunnel junctions containing an ultrathin interfacial layer of Co:TiO magnetic semiconductor. The Co:TiO layers (0 to 1 nm thick) are inserted at the SrTiO Co interface in La Sr MnO SrTiO Co tunnel junctions. For all junctions we find a negative tunnel magnetoresistance, which decreases upon the insertion of Co:TiO , while the junction resista...