StEM at the Max Planck Institute for Metals Research, Stuttgart, Germany



The StuttgartCenter for Electron Microscopy (StEM) at the Max Planck Institute for Metals Research ( MPI-MF) was founded in 2005, preserving the long tradition on transmission electron microscopy (TEM) research and focusing on methodological developments in TEM and related new techniques.


The StEM pursues research activities aiming at the atomic-scale characterization of advanced materials by making use of latest technological and instrumental innovations in TEM such as monochromators and energy filters. This is achieved by the accompanying development of sophisticated methods for data acquisition and analysis. According to the concept of the whole institute, emphasis is given to the atomic-scale analysis of the structure, composition, and electronic state of interfaces and grain boundaries within and between metals, ceramics, and biomaterials.


The StEM operates a number of transmission electron microscopes, two of which offer unique research opportunities and have therefore been selected as Transnational Access ( TNA) facilities within the ESTEEMnetwork.


·     JEOL ARM 1250: A high-voltage TEM operating at 1250 kV. It is equipped with a LaB6 electron source, a drift compensation system, image recording on photographic negatives, imaging plates and video tape, or, using the GIF, on  1k x 1k CCD, etc. Its rather wide pole piece gap and the availability of heating- and cooling holders allow in-situ experiments to be performed with atomic resolution (1.2Å point resolution).


·     Zeiss SESAM: A 200 kV FEG-TEM equipped with a monochromator and a high-transmissivity in-column Mandoline energy filter. The excellent mechanical and energy stability of this instrument allows high-resolution electron energy loss spectroscopy (EELS) experiments to be recorded on 1k x 1k CCD, video tape, photographic negatives, or imaging plates at high spatial resolution and with an energy resolution of 0.1eV or better.