Phenomenological analysis of piezoelectric properties in 0.88Pb (Zn 1/3Nb2/3)O3-0.12PbTiO3 single crystals with an engineering domain configuration

Abstract

The piezoelectric properties of tetragonal 0.88Pb(Zn1/3Nb 2/3)O3-0.12PbTiO3 single crystals are characterized along the <111> direction, which composed the engineering domain configuration in the tetragonal phase. The <111>-oriented crystal possessed smaller d33 values compared to the crystal along the <001> spontaneous polarization direction. Based on phenomenological theory, it is shown that the engineering domain configuration does not enhance the piezoelectric constant in tetragonal 0.88Pb(Zn1/3 Nb 2/3)O3-0.12PbTiO3 single crystals. In addition, the electrostrictive coefficients of Q12=-0.03706 m 4/C2, Q11 = 0.10765 m4/C 2, and Q44=0.02020 m4/C2 of tetragonal 0.88PZN-0.12PT single crystals were calculated.