Concentration-Pressure phase diagram for rich Zr PZT ceramics
  This work reports on the systematic high pressure Raman studies in the PbZr$_{1-x}$Ti$_x$O$_3$ ($0.02 \leq x \leq 0.14$) ceramics performed at room temperature. The pressure dependence of the Raman spectra reveals the stable phases of the material under pressure variation. The results allowed us to propose a concentration-pressure phase diagram for rich Zr PZT system up to pressures of 5.0 GPa. 
A. G. Souza Filho, P. T. C. Freire, A. P. Ayala, J. M. Sasaki, I.   Guedes, J. Mendes Filho, F. E. A. Melo(Departamento de F...