Magnetic Imaging of Multilayered [Co/Pt] Thin Films

I will present a study of the behavior of the magnetic domains of multilayered Cobalt/Platinum thin films. The goal of this project is to experimentally find a magnetic field value at which the number of domains per unit area is maximized. To complete this study, I used a Vibrating Sample Magnetometer to apply a magnetic field to the thin films, and then I used an Atomic/Magnetic Force Microscope to image the magnetic domains of a small area on the sample, usually about 10 x 10 micrometers. The images were then statistically analyzed, and the number of domains was counted and plotted as a function of magnetic field value. I've studied an ascending series of field values on samples with Cobalt layers that are 60 and 12 Angstroms thick. In both cases, a peak field value was observed.