IMAGING DOMAINS IN CO PT MULTILAYERS BY MAGNETIC FORCE MICROSCOPY/

The magnetic microstructure in a Co/Pt multilayer has been imaged by m agnetic force microscopy employing a novel tip structure. Magnetic tip s have been fabricated by evaporating a thin him onto a single facet o f the pyramidal tip of a silicon nitride cantilever. Nanolithographica lly defined elements have been used to simulate the micromagnetic stru cture of the tip and have been investigated by the Lorentz mode of ele ctron microscopy. We demonstrate that stray fields from the Co/Pt mult ilayer can be sensed by the tip producing images of the magnetic micro structure with a fine structure on a scale of 30-40 nm. (C) 1995 Ameri can Institute of Physics.