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Phase transition; molybdenum sulphide; electrical properties; magnetic properties

Samples of Mo₂S₃ system and substituted derivatives with Cr, Nb, Cu and Mn have been studied. The resistivity, thermoelectric power, magnetic susceptibility and specific heat indicate clear phase transition at temperatures between 200 and 310 K. X-ray investigations establish the transitions at these temperatures as structural changes. Careful analysis of the data helps to obtain working values for a model for the energy band. Carrier density, effective mass, mobility, band overlap parameter, density of states for the electrons and holes in the overlapping bands at the Fermi level and the band gap for a higher conduction band are obtained.

A K Rastogi^{1 2} R K Ray¹

1. Department of Physics, Indian Institute of Technology, Kanpur - 208 016, India
2. CRTBT, CNRS, Grenoble, France

Published

November 1981

Manuscript received

23 February 1981