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Title: Field induced metastable ferroelectric phase in Pb 0.97La 0.03(Zr 0.90Ti 0.10) 0.9925O 3 ceramics

Pb 0.97La 0.03(Zr 0.9T i0.1)0.9925O3 (PLZT 3/90/10) ceramics prepared by solid-state reaction with the compositions near the antiferroelectric/ferroelectric (FE/AFE) phase boundary were studied. From the polarization–electric field P(E) dependence and ex situ X-ray study, an irreversible electric field induced AFE-to-FE phase transition is verified at room temperature. Dielectric and in situ temperature dependent X-ray analysis evidence that the phase transition sequence in PLZT 3/90/10-based ceramics can be readily altered by poling. A first order antiferroelectric-paraelectric (AFE-to-PE) transition occurred at ~190 °C in virgin sample and at ~180 °C in poled sample. In addition, a FE-to-AFE transition occurs in the poled ceramic at much lower temperatures (~120 °C) with respect to the Curie range (~190 °C). The temperature-induced FE-to-AFE transition is diffuse and takes place in a broad temperature range of 72–135 °C. Lastly, the recovery of AFE is accompanied by an enhancement in the piezoelectric properties.
 [1] ;  [2] ;  [3] ;  [4] ;  [2] ;  [5] ;  [4]
  1. National Research Council of Italy (CNR), Faenza (Italy). Istituto di Scienza e Tecnologia dei Materiali Ceramici (ISTEC); Alexandru Ioan Cuza Univ., Iasi (Romania)
  2. North Carolina State Univ., Raleigh, NC (United States). Dept. of Materials Science and Engineering
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States).Neutron Scattering Science Directorate
  4. National Research Council of Italy (CNR), Faenza (Italy). Istituto di Scienza e Tecnologia dei Materiali Ceramici (ISTEC)
  5. Alexandru Ioan Cuza Univ., Iasi (Romania)
Publication Date:
Grant/Contract Number:
AC05-00OR22725; 201363-17
Accepted Manuscript
Journal Name:
Journal of the European Ceramic Society
Additional Journal Information:
Journal Volume: 38; Journal Issue: 4; Journal ID: ISSN 0955-2219
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE; National Science Foundation (NSF)
Country of Publication:
United States
36 MATERIALS SCIENCE; Antiferroelectrics; Phase transitions; Ferroelectrics; Piezoelectricity; Depolarization temperature; Ceramics
OSTI Identifier: