Abstract
Temperature dependences of the linear permittivity ε' and coefficient of the third harmonic generation γ3 were studied for the nanocomposite produced by embedding the LiCsSO4 ferroelastic into porous alumina with a pore size of 100 nm compared to the bulk counterpart. The thermal hysteresis was found for the non-linear coefficient γ3 in the nanocomposite at the ferroelastic phase transition. The phase transition temperature in the nanocomposite increased by 15 K upon warming. The results observed were ascribed to mechanical stresses in confined LiCsSO4 nanorodes.