New aspects in the (x-P-T) phase diagram of Pb(Zr Tix)O materials (PZT) J. Rouquette, J. Haines, V. Bornand, M. Pintard et Ph. PapetJ. Phys. IV France, 126 (2005) 59-63DOI: https://doi.org/10.1051/jp4:2005126012