Abstract by Stephen Kotter
Physics and Astronomy
Fits optimization of magnetic profiles in magnetite assemblies
Our research focuses on understanding the magnetic behavior of Fe3O4 nanoparticle assemblies. To understand the magnetic behavior of Fe3O4 (known as magnetite) nanoparticles when forming assemblies, we have studied them with x-ray scattering techniques. Using the synchrotron at the Stanford Synchrotron Radiation Lightsource (SSRL) at Stanford Linear Accelerator Center (SLAC), X-ray Circular Magnetic Dichroism (XMCD) and X-ray Resonance Magnetic Scattering (XRMS) experiments were conducted at different temperatures and magnetic fields on the freshly made samples. From this data, spin and orbital magnetic moments, as well as magnetic profiles, were extracted that provide information about the magnetic order in the nanoparticle assembly. The data has been fitted using MATLAB and Julia. The fitting will show how much of the magnetic behavior is due to the Ferromagnetic and Antiferromagnetic ordering of the nanoparticles.