Electrical conductivity measurements on disk-shaped samples | Zendy

Johannes de Boor | Zendy; Knud Zabrocki | Zendy; J. Frohring | Zendy; Eckhard Müller | Zendy

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Electrical conductivity measurements on disk-shaped samples

Author(s) -

Johannes de Boor,

Knud Zabrocki,

J. Frohring,

Eckhard Müller

Publication year - 2014

Publication title -

review of scientific instruments

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.605

H-Index - 165

eISSN - 1089-7623

pISSN - 0034-6748

DOI - 10.1063/1.4886812

Subject(s) - sample (material) , thermal conductivity measurement , materials science , thermal conductivity , thermoelectric effect , flash (photography) , electrical resistivity and conductivity , bar (unit) , laser flash analysis , finite element method , range (aeronautics) , optics , composite material , electrical engineering , thermodynamics , physics , meteorology , engineering

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

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