|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Characterization of Materials through High Resolution Coherent Imaging
||Progress towards Dichroic Bragg Coherent Diffractive Imaging
||Jonathan Logan, Ross Harder, Luxi Li, Daniel Haskel, Daniel Rosenmann, Martin Holt, Yihua Liu, Tenzin Sangpo, Robert Winarski, Ian McNulty
|On-Site Speaker (Planned)
Magnetization is coupled to the atomic lattice strain in crystals by the magnetoelastic energy. X-ray diffraction methods are powerful tools for study of magnetism and lattice strain, however there are currently no tools for measuring these properties simultaneously at the nanoscale, where local strain fields can influence magnetic domain configurations. By combining x-ray magnetic circular dichroism and Bragg coherent diffractive imaging methods, it should be possible to image nanoscale strain and magnetization at the same time, with a single measurement. We are developing dichroic BCDI techniques for imaging strain and magnetization simultaneously, in two and three dimensions, in isolated magnetic nanocrystals and magnetic thin films. We use circularly polarized x-rays produced by a diamond x-ray phase retarder to gain sensitivity to magnetism. To quantify the feasibility of these methods we are testing them with novel magnetic material systems such as faceted Cobalt-Platinum nanocrystals and tungsten-encapsulated Gadolinium nanocrystals.
||Planned: Supplemental Proceedings volume