(1-x)Pb(In1/2Nb1/2)O3-xPbTiO3 (PINT, PINTx) was studied by PFM. Strip-like ferroelectric domain with x from 0.28 to 0.42 was observed. The in situ electric-field induced domain evolution was studied. Domain with good temperature stability from 30 °C to above 200 °C was observed.