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arxiv: cond-mat/9905380 · v1 · submitted 1999-05-26 · ❄️ cond-mat.mtrl-sci

A Raman Investigation of PbZr0.94Ti0.06O3 Ceramics Under High-Pressures

A.G. Souza Filho , P.T.C. Freire , J.M. Sasaki , I. Guedes , J. Mendes Filho , F.E.A. Melo (Departamento de Fisica , Universidade Federal do Ceara) , E.B. Ara\'ujo
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J.A. Eiras(Universidade Federal de Sao Carlos Departamento de Fisica)
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classification ❄️ cond-mat.mtrl-sci
keywords pbzrdifferentorthorhombicphasepressuresramanrichsequence
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We have investigated the behavior of the PbZr(0.94}Ti(0.06)O3 Raman spectra as a function of Hydrostatic pressures. The new structural phases were identified based on previous works performed in PZT system with different Ti concentrations at room- and high pressures. We showed that PbZr(0.94}Ti(0.06}O3 exhibits a rich phase sequence up to 3.7 GPa: rhombohedral(LT) {0.3 GPa} orthorhombic(I) {2.9 GPa} orthorhombic(I'). This sequence is different from that exhibited by PbZr(0.90)Ti(0.10)O3 suggesting a very interesting concentration-pressure phase diagram for rich Zr PZT system.

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