Title :
Magnetic and transport properties of NiFe-SiO2-NiFe trilayers
Author :
Gieraltowski, J. ; Tannous, C.
Author_Institution :
Lab. de Magnetisme de Bretagne, Univ. de Bretagne Occidentale, Brest, France
fDate :
9/1/2002 12:00:00 AM
Abstract :
Magnetic coupling between Ni81Fe19 double thin-films separated by an insulating SiO2 spacer layer is investigated with structural measurements, cross-sectional imaging, magnetization measurements, and transport under the conditions of variable spacer thickness ranging from 0 to 5000 Å. We consider several models to explain the coercivity variation with spacer thickness as well as the transport measurements.
Keywords :
MIM structures; Permalloy; coercive force; exchange interactions (electron); ferromagnetic materials; giant magnetoresistance; magnetic domain walls; magnetic hysteresis; magnetic multilayers; silicon compounds; sputtered coatings; transmission electron microscopy; 0 to 5000 A; NiFe-SiO2-NiFe; X-ray diagram; coercivity variation; cross-sectional imaging; double films; ferromagnetic coupling; ferromagnetic layers; hysteresis loop; in-layer magnetic domain wall structure; insulating spacer layer; layer morphology; magnetic coupling; magnetic trilayers; magnetization; magnetoresistance; magnetostatic interaction; read heads; sputtered layers; transmission electron microscopy; transport measurements; uniaxial anisotropy; Couplings; Insulation; Magnetic domain walls; Magnetic domains; Magnetic films; Magnetic flux; Magnetic materials; Magnetic properties; Magnetic separation; Magnetostatics;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.801984
