Pressure effect on the Curie temperature and thermal expansion of CrTe

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Abstract
The pressure P derivative dTC/dP of the Curie temperature TC, the linear magnetostriction Delta l/l at 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 dTC/dP is found to be -7.0+or-0.2 K kbar-1. Thermal expansion anomalies of both a and c below TC=350+or-2 K are observed upon cooling. The inverse of chi above TC shows a break at about 600 K. The field derivative d( Delta l/l)/dH in the interval 40 kOe-9 Oe-1. The results obtained are discussed on the basis of an appropriate thermodynamic relation, together with the reported results on dTC/dP and the thermal expansions of Cr1- delta Te.