【摘 要】
：
Recently high-Curie point relaxor ferroelectric single crystals,represented by the Pb(Mg1/3Nb2/3)O3–Pb(In1/2Nb1/2)O3-PbTiO3(PMN-PIN-PT)and(1-x)Pb(In1/2Nb1/2)O3–xPbTiO3(PINT,PINTx),attracted much atten
【机 构】
：
Key Laboratory of Optoelectronic Material and Device,Department of Physics,Shanghai Normal Universit
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Recently high-Curie point relaxor ferroelectric single crystals,represented by the Pb(Mg1/3Nb2/3)O3–Pb(In1/2Nb1/2)O3-PbTiO3(PMN-PIN-PT)and(1-x)Pb(In1/2Nb1/2)O3–xPbTiO3(PINT,PINTx),attracted much attention due to the higher Curie temperature(Tc),higher depolarization temperature(Td),and larger coercive field(Ec)while maintaining the ultrahigh piezoelectric performance.In order to given an insight into the domain structures for these high Tc single crystals,in this work,PINT single crystal,grown by a modified Bridgeman method,was studied by piezoresponse force microscopy(PFM).The composition,electric-field,and temperature induced domain evolution was studied with the focus around the morphotropic phase boundary compositions(MPB).Results indicated that the PINT single crystal exhibited strip-like long-range-order ferroelectric domain structures for the PINTx with x ranging from 0.28 to 0.42.The electric-field induced domain evolution was performed to give an insight into the local poling behavior for the two compositions PINT0.28 and PINT0.34,which located around the MPB.The temperature-dependent PFM indicated that the two compositions exhibited good temperature stability and clear nanoscale domain patterns could still be observed above the Tc.
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