Electrical conductivity measurements on disk-shaped samples
Year: 2014
Type: article
Abstract: We have developed a sample holder design that allows for electrical conductivity measurements on a disk-shaped sample. The sample holder design is based on and compatible with popular measurement systems that are currently restricted to bar-shaped samples. The geometrical correction factors which account for the adjusted measurement configuration were calculated using finite element modeling for a broad range of sample and measurement geometries. We also show that the modeling results can be approximated by a simple analytical fit function with excellent accuracy. The proposed sample holder design is compatible with a concurrent measurement of the Seebeck coefficient. The chosen sample geometry is furthermore compatible with a thermal conductivity measurement using a laser flash apparatus. A complete thermoelectric characterization without cutting the sample is thus possible.
Source: Review of Scientific Instruments
DOI: 10.1063/1.4886812
Authors: J. de Boor, K. Zabrocki, J. Frohring, E. Müller
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Funder: Helmholtz-Gemeinschaft
OpenAlex ID: W2034777027