Abstract by Aaron Gentillon
Physics and Astronomy
Magnetic domain morphologies in Co(60A)Pt multilayers
My project is a study of the magnetic domain patterns and their morphological changes in multilayered Cobalt/Platinum thin films. The thin film which I have been studying has 60Angstrom thick layers of Cobalt. The goal is to observe how the number of domains per unit area changes as a function of the magnitude of the magnetic field previously applied to the sample. To complete this study, I use a Vibrating Sample Magnetometer instrument to apply magnetic fields of various magnitudes to the film, and then I use Atomic/Magnetic Force Microscopy to image the magnetic domains on small areas of the sample, either 20x20 or 10x10 micrometers squared. The images are then analyzed with a statistical program, which counts the number of domains. I then plot the domain density as a function of magnetic field magnitude. We observed a peak in the domain density, suggesting a morphological transition from a maze pattern to a bubble pattern.