The　relaxor-based　ferroelectric　single　crystals　Pb(In1/2Nb1/2)O3-　Pb(Mg1/3Nb2/3)O3-PbTiO3　were　grown　successfully　using　the　vertical　Bridgman　technique.　The　crystals　were　spontaneously　nucleated　and　induced　to　grow　by　the　seed　respectively,　with　diameter　of　O25-40　mm　and　length　of　80-170　mm.　The　[001]-oriented　wafers　of　as-grown　crystals　showed　the　excellent　electrical　characterizations　(epsilon　5500,　tan1.35%,　d33　1900pC/N,　k330.9).　Both　the　higher　rhombohedral-tetragonal　phase　transition　temperature　(Tr/t　100-120　degrees　C)　and　Curie　temperature　(Tc　170-200　degrees　C)　enlarged　the　operating　temperature　range　of　the　devices.　The　crystals　had　the　stable　time　dependence　of　piezoelectric　properties.　Therefore,　the　successful　growth　and　high　performance　made　the　crystal　be　a　promising　candidate　for　the　ultrasonic　applications.