Andrew M. Minor
Department of Materials Science and Engineering, University of California
National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory
Abstract
This talk will describe our recent results utilizing energy filtered diffraction, 4D-STEM and in situ TEM testing that provide insight into the determination and role of short range order (SRO) in materials. Examples will be presented from structural alloys such as α-titanium and the CrCoNi medium entropy alloy, as well as semiconductors such as a SiGeSn/GeSn multilayer. We will consider the role of both SRO and planar defects in the both the mechanical response as well as structural determination via electron diffraction as a function of heat treatment in the CrCoNi MEA. Lastly, we will discuss both the strengths and limitations of TEM methods for analyzing SRO in these systems, with particular emphasis on coordinated computational methods to simulate diffraction patterns in order to directly compare with experimental measurements.
Short Bio
Andrew Murphy Minor is the Chancellor’s Professor and Vice-Chair in the Department of Materials Science & Engineering at the University of California, Berkeley and also holds a joint appointment at the Lawrence Berkeley National Laboratory where he is the Facility Director of the National Center for Electron Microscopy in the Molecular Foundry. He has over 290 publications in the fields of nanomechanics, metallurgy, electron characterization of soft matter and in situ transmission electron microscopy technique development. Minor’s honors include the LBL Materials Science Division Outstanding Performance Award (2006 & 2010), the AIME Robert Lansing Hardy Award from TMS (2012) and the Burton Medal from the Microscopy Society of America (2015). In 2023 he served as President of the Microscopy Society of America.