Pb(Mg1/3Nb2/3)O-3-Pb(Fe1/2Nb1/2)O-3-PbTiO3 (PMN-PFN-PT) single crystal was grown successfiffly from high temperature solution by slow cooling method. Structure, frequency dependent dielectric properties and domain configuration of 100 11-oriented single crystal have been investigated. X-ray diffraction analysis showed that the as-grown single crystal had a pure perovskite structure with tetragonal symmetry at room temperature. The temperature dependent dielectric permittivity showed only one dielectric anomaly, indicating the ferroelectric-paraelectric phase transition. According to the modified Curie-Weiss relationship, as-grown PMN-PFN-PT single crystal was in an intermediate state between normal and relaxor ferroelectrics. Dielectric permittivity and loss of [0 0 11-oriented PlV1N-PFN-PT single crystal at room temperature decreased sharply with increasing frequency, which were different from those of PMN-PT65/35 single crystal. Domain configuration of [0 0 11-oriented PMN-PFN-PT single crystal was observed for the first time by using a polarized light microscopy (PLM). The extinction of 90 domains at P/A:0 revealed a tetragonal structure. Domains along (0 0 1) face exhibited a straight stripe-like morphology with domain size on the scale of 10 pm in average, combining with some much smaller domains about 3-5 pm in width at the intersection of domain blocks which helps to minimize its total energy. (C) 2014 Elsevier rights reserved.