Structural clarification of GMR changes at high temperatures by use of Energy Filtered Transmission Electron Microscopy (EFTEM). This allows color coded maps of the elemental distribution. Here we chose red for Co and green for Cu. The individual layers have 2nm thickness. Research in collaboration with dept. Thin films and nanostructures.
Multi layer systems are used as tunneling magneto resistance (TMR) devices. The morphology of the (barrier) layers is visualized by energy filtered TEM. Research in collaboration with dept. Thin films and nanostructures.