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Electronic Properties of the TI–AgTITe 2 System in the Liquid State
Author(s) -
Uemura O.,
Itoh M.,
Satow T.
Publication year - 1982
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221090139
Subject(s) - diamagnetism , seebeck coefficient , electrical resistivity and conductivity , materials science , condensed matter physics , magnetic susceptibility , semiconductor , atmospheric temperature range , conductivity , analytical chemistry (journal) , thermodynamics , thermal conductivity , chemistry , magnetic field , physics , composite material , chromatography , quantum mechanics , optoelectronics
The electrical conductivity, the magnetic susceptibility, and the thermoelectric power of the liquid TI–AgTITe 2 system are measured as a function of temperature and composition. The temperature coefficient of electrical conductivity and magnetic susceptibility in the concentration range from pure AgTITe 2 to 66.7 mol% TI decreases gradually with increasing TI concentration. The alloys in the vicinity of 66.7 mol% TI have a weak temperature‐dependent conductivity and diamagnetism at low temperature but above 700°C both quantities of these alloys vary strongly with temperature. The electrical conductivity indicates a deep minimum and the diamagnetic susceptibility gives a sharp maximum at 66.7 mol% TI, while the thermoelectric power changes its sign around this composition. These results suggest that the state density of electrons has a minimum at the composition corresponding to AgTI 3 Te 2 (66.7 mol% TI) and a metal–semiconductor transition as found for the liquid TI‐Te system also occurs in this system. The electronic properties obtained are discussed in terms of the current diffusive transport model for liquid semiconductors.