Dissertation: Bryan Esser, Study of novel magnetic configurations and structures to develop a method for extracting 3D ordering information from 2D experimental images
CEMAS Theater
CEMAS Theater
1305 Kinnear Rd
Columbus, OH 43212
United States
Abstract
Materials for next-generation device applications will rely on novel magnetic configurations and structures. A number of experimental techniques exist to study such materials to establish structure-property relationships. In this work, high-resolution electron microscopy and spectroscopy are paired with first principles calculations and a quantum mechanical model for electron scattering. The effect of atomic-scale ordering on image contrast in scanning transmission electron microscopy is studied in detail to develop a method for extracting 3D ordering information from 2D experimental images. In addition, magnetic skyrmion materials are investigated in situ to correlate the atomic and magnetic structures as a function of applied magnetic field and temperature.