Observation of Rotation of Polarization in Thin Films of Pb(Sc1/2Nb1/2)O3–PbTiO3 via a Monoclinic Phase
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概要
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Using a simple methodology based on the classical Bragg–Brentano X-ray geometry we have evidenced at room temperature a pseudo-cubic phase and a monoclinic (Pm) phase in thin films of PbSc1/2Nb1/2O3 (PSN) and (PbSc1/2Nb1/2O3)0.57–(PbTiO3)0.43 (PSN–PT) respectively, the latter compound corresponding to a morphotropic phase boundary (MPB) composition. Depending on the substrate and the thickness, different domains configuration are obtained. Competition between epitaxial and thermal stress induces a complex structural evolution with temperature which is different from that of ceramic samples. Indeed PSN films transform from a pseudo-cubic (triclinic) phase towards a cubic phase whereas in PSN–PT, a succession of transformations from a pure Pm phase toward a tetragonal (possibly non polar) phase is observed, a cubic phase never being reached up to 950 K.
- 2006-01-25
著者
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KIAT Jean-Michel
Laboratoire de Chimie-Physique du Solide
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DKHIL Brahim
Laboratoire de Chimie-Physique du Solide
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Uesu Yoshiaki
Depart. Phys. Waseda Univ.
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Haumont Raphael
Laboratoire Structures Proprietes Et Modelisation Des Solides Ecole Centrale
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LEMARREC Francois
Laboratoire de Physique de la Matiere Condensee, Universite de Picardie-Jules Verne
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Malibert Charlotte
Laboratoire Structures Proprietes Et Modelisation Des Solides Ecole Centrale
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Asanuma Shutaro
Department Of Physics Waseda University
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Haumont Raphael
Laboratoire Structures, Propriétés et Modélisation des Solides, Ecole Centrale, Grande Voie des Vignes 92295 Châtenay-Malabry Cedex, France
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Kiat Jean-Michel
Laboratoire Structures, Propriétés et Modélisation des Solides, Ecole Centrale, Grande Voie des Vignes 92295 Châtenay-Malabry Cedex, France
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Dkhil Brahim
Laboratoire Structures, Propriétés et Modélisation des Solides, Ecole Centrale, Grande Voie des Vignes 92295 Châtenay-Malabry Cedex, France
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Uesu Yoshiaki
Department of Physics, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
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LeMarrec Francois
Laboratoire de Physique de la Matière Condensée, Université de Picardie-Jules Verne, 80039 Amiens, France
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Malibert Charlotte
Laboratoire Structures, Propriétés et Modélisation des Solides, Ecole Centrale, Grande Voie des Vignes 92295 Châtenay-Malabry Cedex, France
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Asanuma Shutaro
Department of Physics, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
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