Phase transitions and domain structures in relaxor-based ferroelectric (PbZn1/3Nb2/3O3)0.915(PbTiO3)0.085 single crystal |
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Authors: | Chi-Shun Tu V Hugo Schmidt I -C Shih George W Taylor |
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Affiliation: |
a Department of Physics, Fu Jen University, Taipei, Taiwan, Republic of China
b Department of Physics, Montana State University, Bozeman, Montana, USA |
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Abstract: | Polarization-electric field (P-E) hysteresis loops and domain structures have been measured as a function of temperature in relaxor-based ferroelectric single crystal (PbZn1/3Nb2/3O3)0.915(PbTiO3)0.085 (PZN-8.5%PT). In order of increasing temperature, PZN-8.5%PT undergoes successive phase transitions: rhombohedra1 phase (below ∼375 K) → coexistence of rhombohedral and tetragonal phases (between ∼375 and ∼390 K) → tetragonal phase (between ∼390 and ∼420 K) → coexistence of tetragonal and cubic phases (between ∼420 and ∼460 K) → cubic phase (above ∼460 K). Phase coexistence suggests an inhomogeneous distribution of Ti4+ concentration in the PZN-8.5%PT crystal. |
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Keywords: | relaxor-based ferroelectric PZN-8 5%PT phase transition domain structure |
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