CEF EFFECTS AND ELASTIC PROPERTIES OF CETE

We have measured the temperature and magnetic field dependences of the elastic constants in CeTe. Both modes of C44 and (C11-C12)2 exhibit the characteristic softenings reflecting the level scheme Γ7(0 K) - Γ8(32 K). The rotational invariance effect has been found in the magnetic field dependences of the C44 mode. The single crystal of CeTe has been grown by the Bridgman method. For the sound velocity measurements we used a phase comparison method realizing the LiNbO3 transducers. The density ρ = 4.91 g/cm3 of CeTe is used for converting sound velocities to the elastic constants.