The spatial distribution of magnetic properties studied by polar Kerr-effect-based
magnetometry are carried out on an ultrathin cobalt wedge covered with a silver wedge
whose slopes are perpendicular to each other and subsequently capped with a gold layer.
The coercivity field was studied as a function of both cobalt thickness d and silver thickness
h. A few monolayers of Ag were found to have a substantial influence on the coercivity field.
A similar strong influence of silver coverage on the magnetic anisotropy field was observed …