Pressure effect on the Curie temperature and thermal expansion of CrTe

The pressure P derivative dT(C)/dP of the Curie temperature T(C), the linear magnetostriction DELTAl/l al 4.2 K, the lattice parameters a and c as functions of temperature T and the high-temperature paramagnetic susceptibility chi of CrTe have been measured. The value of dT(C)/dP is found to be -7.0 +/- 0.2 K kbar-1. Thermal expansion anomalies of both a and c below T(C) = 350 +/- 2 K are observed upon cooling. The inverse of X above T(C) shows a break at about 600 K. The field derivative d(DELTAl/l)/dH in the interval 40 kOe < H < 78 kOe at 4.2 K is found to be 1.2 x 10(-9) Oe-1. The results obtained are discussed on the basis of an appropriate thermodynamic relation, together with the reported results on dT(C)/dP and the thermal expansions of Cr1-deltaTe.