Applied Physics Letters · 1996 · 83 citations · 4 references
Magnetic PropertiesEngineeringIon Beam SputteringIon Beam InstrumentationSpintronic MaterialMagnetic MaterialsMagnetoresistanceMagnetismSpin ValvesIon BeamMagnetic Thin FilmsNimn-pinned Spin ValvesMaterials ScienceFilm Layer StructurePhysicsSpintronicsMicrofabricationNatural SciencesApplied PhysicsThin FilmsMagnetic Device
Spin valves of film layer structure, Ta/NiMn/NiFe/Co/Cu/Co/NiFe/Ta/Substrate were fabricated by ion beam sputtering. Optimization of the processes of deposition and posthermal treatment yields highly (111) oriented spin valve films with a giant-magnetoresistance ratio of above 4% and pinning field of 650 Oe. This is the strongest pinning field ever observed. It stays constant up to 180 °C, then decreases to zero at a blocking temperature of 380 °C. These spin valves are highly thermally stable and, thus, suitable for the application of high density recording heads.
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Spin-valve heads utilizing antiferromagnetic NiO layers
Yoshihiro Hamakawa, H. Hoshiya, Tohru Kawabe et al. · IEEE Transactions on Magnetics · 1996 · 55 citations