Raman studies of polycrystalline CaCu${}_3$Ti${}_4$O${}_{12}$ under high-pressure

D. Valim, A. G. Souza Filho, P. T. C. Freire +5

We report a Raman scattering study of polycrystalline CaCu${}_3$Ti${}_4$O${}_{12}$ (CCTO) under pressure up to 5.32 GPa. The pressure dependence of several Raman modes was investigated.…