Project Details
Projekt
High temperature Hall measurement system
Subject Area
Chemical Solid State and Surface Research
Term
Funded in 2025
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 566050786
The characterization of the electrical properties is of crucial importance for elucidating the underlying transport processes in a material and, thus, it is essential for the further development and optimization of materials for almost all kinds of applications. The most reliable method for determining the charge carrier concentration and the carrier mobility is the measurement of the Hall voltage under the influence of an external magnetic field. This is why measurements of the Hall effect are established as the method of choice for characterizing the electrical properties of semiconductors at temperatures below room temperature. The requested high-temperature Hall effect measurement system complements the infrastructure available at the Center for Materials Research ZfM/LaMa at the Justus Liebig University for a reliable characterization of the electrical transport properties of technology-relevant functional materials. With the existing infrastructure this is currently only possible in the temperature range from 1.5 K to room temperature. The requested high-temperature Hall effect measurement system allows the determination of the charge carrier concentration and the mobility of advanced functional materials above room temperature. In addition to the characterization of electronic charge transport in semiconductors for high-performance electronics, this also includes the characterization of the ionic transport properties of ceramics and solid electrolytes for electrochemical devices, which are operated in the temperature range up to 1000 °C. Due to the possibility for a reliable determination of the electronic and ionic transport properties of technologically relevant solids even at high temperatures, the requested measurement setup will be used in various research projects in the fields of materials science, physics and physical chemistry. For the research activities at the ZfM, Hall measurements at high temperatures not only represent a significant added value in order to clarify the influence of composition, microstructure and doping on electronic and ionic transport processes at application-relevant temperatures. They also represent a unique selling point, in particular regarding the electrical characterization of materials for high-performance electronics and energy applications, which will significantly strengthen the “Materials and Energy” profile area and the international visibility of the Justus Liebig University.
DFG Programme
Major Research Instrumentation
Major Instrumentation
Hochtemperatur-Hallmesssystem
Instrumentation Group
0140 Magnetfeld- und -flußmeßgeräte (außer Geomagnetik 040)
Applicant Institution
Justus-Liebig-Universität Gießen
