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Electronic properties of liquid SbSe and BiSe alloys
Author(s) -
Satow T.,
Uemura O.,
Matsumoto K.,
Okamura S.
Publication year - 1987
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.2221400124
Subject(s) - seebeck coefficient , diamagnetism , materials science , condensed matter physics , electrical resistivity and conductivity , melting point , stoichiometry , composition (language) , thermoelectric effect , analytical chemistry (journal) , thermodynamics , thermal conductivity , chemistry , magnetic field , physics , chromatography , linguistics , philosophy , quantum mechanics , composite material
The electrical conductivity (σ), the magnetic susceptibility (χ), and the thermoelectric power ( S ) of liquid SbSe and BiSe alloys are measured as function of composition in the temperature range from the melting point to about 1000 °C. On adding Se to Sb and Bi σ indicates a rapid fall and χ has a sharp maximum of diamagnetism at the stoichiometric composition of M 2 Se 3 in both the systems. A reversion of the sign of S is observed around the composition of Sb 2 Se 3 in liquid SbSe alloys, while S in liquid BiSe alloys remains negative over a wide composition range including Bi 2 Se 3 . The calculated value of g (the ratio of real and free electron density of states at the Fermi level) using the observed values of σ begins to decrease in the vicinity of 50 at% Se and drops sharply at the concentration of 60 at% Se in both systems. Electronic properties obtained are discussed in the light of current transport theories employed in liquid semiconductors.