Growth and domain structures in PZN-PT ferroelectric single crystals

0.91Pb(Zn_1/3Nb_2/3)O3-0.09 PbTiO₃ (PZN-9%PT) single crystal was grown by flux Bridgman method. The crystal was oriented and cut into several plates. The polished plate looks pale yellow with 50% transmittance. Strip-like and finger-like domains were observed using a polarized light microscopy. The evaluation of domains were observed using a high temperature metallurgical microscope and the results revealed the reversible process of domains from rhombohedral and tetragonal to cubic phases. Cary 5000 UV/VIS/NIR spectrophotometer was used to be measured the transmittance. The results show that two regions exhibit different transmittance.