Phase transition and phase stability in [110]-, [001]-, and [111]-oriented 0.68Pb([Mg.sub.1/3][Nb.sub.2/3])[O.sub.3]-0.32PbTi[O.sub.3] single crystal under electric field

The phase transition and the phase stability in 0.68Pb([Mg.sub.1/3][Nb.sub.2/3])[O.sub.3]-0.32PbTi[O.sub.3] (PMN-0.32PT) single crystals under different electric fields are examined. The results have helped in understanding the phase transitions as well as the impact of the electric field on the phase transitions in PMN-PT single crystals.