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Electrical conductivity measurements on disk-shaped samples

de Boor, Johannes and Zabrocki, Knud and Frohring, J. and Müller, Eckhard (2014) Electrical conductivity measurements on disk-shaped samples. Review of Scientific Instruments, 85 (7), 075104. American Institute of Physics (AIP). DOI: 10.1063/1.4886812 ISSN 0034-6748

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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.

Item URL in elib:https://elib.dlr.de/92612/
Document Type:Article
Title:Electrical conductivity measurements on disk-shaped samples
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
de Boor, JohannesGerman Aerospace Center, Institute of Materials Research, Köln, GermanyUNSPECIFIED
Zabrocki, KnudGerman Aerospace Center, Institute of Materials Research, Köln, GermanyUNSPECIFIED
Frohring, J.Linseis Meßgeräte GmbH, Vielitzerstrasse 43, 95100 Selb, GermanyUNSPECIFIED
Müller, EckhardGerman Aerospace Center, Institute of Materials Research, Köln, Germany and Justus Liebig University Giessen, Institute of Inorganic and Analytical Chemistry, 35392 Giessen, GermanyUNSPECIFIED
Date:9 July 2014
Journal or Publication Title:Review of Scientific Instruments
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:85
DOI :10.1063/1.4886812
Page Range:075104
Publisher:American Institute of Physics (AIP)
ISSN:0034-6748
Status:Published
Keywords:Sample handling; measurement electrical conductivity; electrical resisitivity; geomtry correction factor; FEM
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - Fahrzeugenergiesystem III (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Thermoelectric Materials and Systems
Deposited By: Zabrocki, Dr. Knud
Deposited On:01 Dec 2014 10:14
Last Modified:06 Sep 2019 15:29

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