ELECTRONIC SPECIFIC-HEAT OF -THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-0.1)(XS2 (0)

The low-temperature specific heat and the X-ray diffraction have been measured for Ti1+xS2 (0<x<0.1) with the well-defined composition. The obtained lattice and internal parameters increase linearly with the Ti content. The observed electronic specific heat increases linearly wit h x(1/3). This linear relation changes its slope at x(1/3) = 0.26 and the value goes to zero at x = 0. It is concluded that the electronic s tructure of stoichiometric TiS2 has a band gap and two Ti-based conduc tion bands with a small energy difference.