Browsing School of Physics by Author "KURT, HUSEYIN"
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Boron diffusion in magnetic tunnel junctions with MgO (001) barriers and CoFeB electrodes
KURT, HUSEYIN; OGUZ, KAAN; BOESE, MARKUS; FAULKNER, COLM; COEY, JOHN; RODE, KARSTEN (2010)Boron diffusion out of the CoFeB layers in model systems with thick CoFeB and MgO layers grown by radiofrequency sputtering or electron-beam evaporation and in MgO-based magnetic tunnel junctions (MTJs) is probed after ... -
Giant tunneling magnetoresistance with electron beam evaporated MgO barrier and CoFeB electrodes
COEY, JOHN; KURT, HUSEYIN (2010)Electron-beam (EB) evaporated MgO grows with (001) texture on amorphous CoFeB when the deposition rate is kept below 5 pm/s. Magnetic tunnel junctions (MTJs) fabricated using this method exhibit similar to 240% magnetoresistance ... -
Perpendicular Magnetic Anisotropy in CoFeB/Pd Bilayers
COEY, JOHN; FOWLEY, CIARAN; OGUZ, KAAN; RODE, KARSTEN; KURT, HUSEYIN (2010)Perpendicular magnetic anisotropy is observed in ultrathin (0.6 nm) amorphous Co40Fe40B20 when sputtered on an MgO (001) buffer layer and capped with Pd. The layers are superparamagnetic with a blocking temperature of ... -
Reduced low frequency noise in electron beam evaporated MgO magnetic tunnel junctions
COEY, JOHN; FENG, JIA-FENG; DIAO, ZHU; KURT, HUSEYIN (2010)We compare low frequency noise in magnetic tunnel junctions with MgO barriers prepared by electron-beam evaporation with those prepared by radiofrequency sputtering, both showing a high tunneling magnetoresistance. The ...