Browsing Physics (Scholarly Publications) by Author "FOWLEY, CIARAN"
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Inverted magnetoresistance in dual spin valve structures with a synthetic antiferromagnetic free layer
SHVETS, IGOR; COEY, JOHN; FOWLEY, CIARAN; WU, HAN-CHUN (2009)We report an oscillation of the giant magnetoresistance GMR ratio as a function of Ru layer thickness in the CoFe/Cu/ CoFe/Ru/CoFe SAF/Cu/CoFe/IrMn dual spin valve SV structure. A normal GMR with a positive sign is ... -
Negative magnetoresistance in dual spin valve structures with a synthetic antiferromagnetic free layer
FOWLEY, CIARAN; COEY, JOHN MICHAEL DAVID (IEEE, 2009)Giant magnetoresistance (GMR) in spin valves is due to spin-dependent scattering occurring at ferromagnet/normal metal (F/N) interfaces and/or in the ferromagnetic layers. In a spin valve with a typical F/N/F structure ... -
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 ... -
Three-state dual spin valve structure
COEY, JOHN; FOWLEY, CIARAN (2010)A dual spin valve is built with exchange bias on the top and bottom pinned layers and a central free layer. By suitable choice of the antiferromagnetic and ferromagnetic layer thicknesses, it is possible to separate the ...