Synthesis and Real Structure Group

CRC 1261 - Biomagnetic Sensing

Niklas Wolff


Within the CRC 1261 „Biomagnetic Sensing“, the aim of project A6 is to analyze all sensor components with respect to their micro- and nanostructure, chemical peculiarities and strain in the material. The synergistic combination of synchrotron X-ray diffraction methods and transmission electron microscopy herein plays a vital role in performing multiscale analysis. The project is linked to several projects on sensor fabrication and engineering within the CRC, especially to project A5 which is investigating sensor systems for piezotronic readout as well as to project A1 which engineers the magnetic phase of the sensors to achieve low noise capabilities. In the first funding period of the CRC, piezoelectric materials based on ZnO nanorods, GaN, few layer MoSe2 and a new ferroelectric material AlScN have been subject of the studies. As magnetic material of choice, amorphous FeCoSiB films are investigated with respect to variations of near and short-range order. Alternative systems made of multilayers of FeCo/TiN with vertical layer sizes restricted to below 1 nm were analyzed using probe corrected scanning TEM and anisotropic lattice strains have been identified to be related to magnetic hardness.