In situ hall measurements at temperatures up to 1100°C with selectable gas atmospheres

M. Fleischer, H. Meixner

Research output: Contribution to journalArticle

3 Citations (Scopus)


A test set-up was constructed for Hall measurements at temperatures up to 1100°C in freely selectable gas atmospheres to characterize gas-sensitive semiconducting metal oxides. A technique based on conventional specimen geometry is used. The specimen current is low-frequency AC, that allows the transverse voltage to be measured with low noise by the lock-in technique. A magnetic field is controlled between 0 T and ±1 T or alternates between these values and the change in transverse voltage in consonance with the magnetic field change is evaluated. A cylindrical miniaturized high-temperature measurement cell with an external diameter of 5 cm was constructed to satisfy the measuring conditions. Temperatures up to 1100°C are generated by an electric heating coil, a constant temperature being ensured by a water cooler acting as a defined heat sink. The air tightness of the measurement chamber is achieved via a quartz glass cell. Initial test measurements were performed with Pt thin films and with Ga2O3 and SrTiO3 monocrystals.

Original languageEnglish
Pages (from-to)580-583
Number of pages4
JournalMeasurement Science and Technology
Issue number5
Publication statusPublished - May 1994

ASJC Scopus subject areas

  • Instrumentation
  • Engineering (miscellaneous)
  • Applied Mathematics

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