Journal of Inorganic Materials

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Temperature Dependence of Dielectric and Piezoelectric Properties of Pb(In1/2Nb1/2)O3-PbTiO3 Single Crystal

GUO Yi-Ping; LUO Hao-Su; PAN Xiao-Ming; XU Hai-Qing; YIN Zhi-Wen   

  1. Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 201800; China
  • Received:2002-08-08 Revised:2002-09-06 Published:2003-09-20 Online:2003-09-20

Abstract: Temperature dependence of dielectric, piezoelectric properties and polarization vs E-field curves of Pb(In1/2Nb1/2)O3-PbTiO3 single crystal grown
directly from melt by the modified Bridgman technique with an allomeric Pb(Mg1/3Nb2/3)O3-PbTiO3 seed crystal was investigated. For <001>
poled crystals, the permittivity εr and the dielectric loss tangent tgδ are 5000 and 1% respectively. For T<100℃, the value
of k33 is relatively temperature independent, with a value between 0.9 to 0.95, even at 150℃, the value of k33 decreases by only 10%. The
value of d33 reaches up to a maximum of 3000 pC/N at about 80℃, and has a value of 850 pC/N at 150℃. The results obtained show that
(1-x)Pb(In1/2Nb1/2)O3-xPbTiO3 single crystals are promising for a wide range of electromechanical transducer applications.

Key words: PIN-PT single crystal, dielectric, piezoelectricity, temperature stability

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