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High pressure phases in highly piezoelectric Pb(Zr0.52Ti0.48)O3

A. Sani·B. Noheda·I. A. Kornev·L. Bellaiche·P. Bouvier·J. Kreisel
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Abstract

Two novel room-temperature phase transitions are observed, via synchrotron x-ray diffraction and Raman spectroscopy, in the Pb(Zr0.52Ti0.48)O3 alloy under hydrostatic pressures up to 16 GPa. A monoclinic (M)-to-rhombohedral (R1) phase transition takes place around 2-3 GPa, while this R1 phase transforms into another rhombohedral phase, R2, at about 6-7 GPa. First-principles calculations assign the R3m and R3c symmetry to R1 and R2, respectively, and reveal that R2 acts as a pressure-induced structural bridge between the polar R3m and a predicted antiferrodistortive R-3c phase.

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A. Sani, B. Noheda, I. A. Kornev, L. Bellaiche, P. Bouvier, J. Kreisel. 2003-09-30. High pressure phases in highly piezoelectric Pb(Zr0.52Ti0.48)O3. https://doi.org/10.1103/physrevb.69.020105

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