César Magén 

Instituto de Ciencia de Materiales de Aragón (ICMA), CSIC-University of Zaragoza, Zaragoza, Spain

Abstract

Title: Quantitative Transmission Electron Microscopy of Advanced Nanomaterials: Applications in Multiferroic Oxides and Nanomagnetism.

Recent trends in Nanoscience and Nanotechnology have evidenced the need for accurate quantitative nanocharacterization methods to determine the magnitude of fundamental physical properties of novel nanomaterials at the nanoscale. Nowadays the most advanced transmission electron microscopy techniques have reached unprecedented levels of resolution and sensitivity that that enables the quantitative analysis of the atomic structure, chemical composition, electronic or magnetic state of novel functional materials, in some cases with atomic resolution. In this lecture, I will review some applications of advanced TEM techniques, focusing on aberration corrected scanning transmission electron microscopy and off-axis electron holography, used to probe the structural, chemical, electronic and magnetic properties down to the atomic scale in the fields of the complex multiferroic oxides and nanomagnetism.

Biography

Dr. César Magén got his PhD in Physics in 2005 at the University of Zaragoza in the field of magnetocaloric materials. In 2006 he began his activities in the field of aberration corrected transmission electron microscopy techniques, firstly as a postdoctoral fellow at the CEMES-CNRS in Toulouse (2006-07), later in Oak Ridge National Laboratory (2007-08) in Tennessee (USA). In 2008 he was awarded an ARAID Fellowship to continue his research activities at the Instituto de Nanociencia de Aragón (INA) of the University of Zaragoza. He has been member of the ICTS Laboratorio de Microscopías Avanzadas (LMA), host of the first aberration corrected TEM microscopes installed in Spain, since its foundation in 2009. He was appointed Coordinator of the TEM Area of the LMA in 2016. Since 2014 he is Associated Professor of the University of Zaragoza, and Staff Researcher of the Spanish Research Council (CSIC) at the Instituto de Ciencia de Materiales de Aragón (ICMA) since June 2017. His current research interests focus on the development of novel functional nanomaterials in the fields of the complex multiferroic oxides and Nanomagnetism by the application of different advanced transmission electron microscopy techniques, such as aberration corrected STEM and electron holography. Dr. Magén has co-authored about 160 publications in international peer reviewed journals, with an h-index of 29. He has given more than 20 invited talks in national and international conferences as well as participated in numerous workshops and schools on electron microscopy.