Field-induced effect in the <111>-oriented 0.70Pb(Mg1/3Nb2/3)O3–0.30PbTiO3 single crystals |
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| Affiliation: | 1. Department of Power Engineering, Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, North China Electric Power University, Beijing 102206, P. R. China;2. State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, P. R. China;3. Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram and Superfine, Shanghai 201800, P. R. China;1. Université de Carthage, Institut national des sciences appliquées et de technologie, Laboratoire de recherche matériaux, mesures et applications, LR 11 ES 25, INSAT, B.P. 676, 1080 Tunis cedex, Tunisie;2. Université de Carthage, Institut national des sciences appliquées et de technologie, Laboratoire d''ingénierie mathématique, EPT, La Marsa, Tunisie;3. Laboratoire de mécanique des fluides et d''acoustique, CNRS/Université de Lyon, Université Claude-Bernard Lyon-1/École centrale de Lyon/INSA de Lyon, ECL, 36, avenue Guy-de-Collongue, 69134 Écully cedex, France;4. IMFT, UMR CNRS/INP/UPS 5502, UFR MIG, Université Paul-Sabatier, 118, route de Narbonne, 31062 Toulouse cedex, France;1. Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry, Zhengzhou 450002, PR China;2. School of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325027, PR China;1. Department of Physics, Islamic Azad University, North Tehran Branch, Tehran, Iran;2. Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Krakow, Poland;3. Department of Physics, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA;4. Department of Physics, Alzahra University, Tehran, Iran;1. Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, 55455, USA;2. Department of Physics, Georgia Institute of Technology, Atlanta, GA, 30332, USA;3. Institute for Advanced Materials, Devices, and Nanotechnology, Rutgers University, Piscataway, NJ, 08854, USA;4. Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL, 60439, USA |
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| Abstract: | Temperature-dependent dielectric constant, X-ray diffraction(XRD), thermally stimulated discharging current (TSDC) and polarization hysteresis loops for <111>-oriented 0.70Pb(Mg1/3Nb2/3)O3–0.30PbTiO3 crystals after poling under different fields were measured. Comparing with unpoled sample during heating, except that there is a transition from the state of normal ferroelectric rhombohedral (macro-domain) to the state of relaxor ferroelectric rhombohedral (micro-domain) for the poled samples, it was found that no other phase transition was induced by poling fields. XRD showed that after poling the piezoelectric elongation of the unit cell occurred along the polar direction. It was suggested that an extra peak in the T–ε curve of poled sample around 105 °C is not only caused by a macro–micro domain transition but also caused by the depolarization process of 180° and 71° domain switching simultaneously. |
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