Incommensurate phase transition in a TlInS2 crystal
Vakhrushev S. B. , Zhdanova V. V. , Kvyatkovskii B. E. , Okuneva N. M. , Allakhverdiev K. R. , Aliev R. A. , Sardarly R. M.
A transition to an incommensurate phase occurs at 220 К in TlInS2. The anomalous features in the dielectric constant are shown to result from changes in a modulated structure. A transition to a commensurate phase through a quadrupling of the volume of the unit cell has been observed for the first time.