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Electrical properties of liquid Cd-Te alloys

A. Ben Moussa*, B. Giordanengo, J. C. Humbert, H. Chaaba, M. Bestandji, and J. G. Gasser

  • Laboratoire de Physique des Liquides et des Interfaces, 1 Bd Arago, 57 078 Metz Cedex 03, France

  • *Corresponding author. FAX: (33) 3 87 31 58 01; Email address: benmsa@ipc.sciences.univ-metz.fr
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Phys. Rev. B 62, 16632 – Published 15 December, 2000

DOI: https://doi.org/10.1103/PhysRevB.62.16632

Abstract

The electrical resistivity and the thermopower of liquid Cdx−Te1−x have been investigated experimentally as a function of temperature over the whole composition range. Due to the high melting point of Cd0.5Te0.5(1098°C) and the low boiling points of cadmium (765 °C) and tellurium (990 °C), the measurements were difficult. Nevertheless, with a different experimental setup we were able to measure the resistivity and the thermopower from the liquidus up to 1200 °C. The resistivity shows a maximum at x=0.54 reaching a value of 13 000 μΩ cm at 1100 °C. A marked feature of liquid Cdx−Te1−x is that the thermopower varies rapidly from a positive value in the tellurium rich region to a negative value in the cadmium rich one around the equiatomic composition. The electronic properties, near this composition, were analyzed by using equations derived from the Kubo-Greenwood formula.

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Phys. Rev. B 62, 16632– Published 15 December, 2000
  • Received 30 November 1999

© 2000 American Physical Society

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