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Abstract
The electrical conductivity of liquid Mn x Te1-x (0≤x£0·5) has been measured as a function of x. It is shown that the semi-metallic nature of liquid Te is gradually eliminated as x is increased and that at stoichiometry (x = 0·5) MnTe is a liquid semiconductor. This behaviour is contrasted with that for liquid Ni x Te1-x which becomes increasingly metallic. Neutron diffraction data are used to show that Mn x Te1-x and Ni x Te1-x are structurally similar. The differences in electrical behaviour are discussed in terms of the Mott—Hubbard model of magnetic insulators.
