Interplay between pressure and local symmetry in (Pb1-3/2x Lax)(Zr60 Ti40) O3 Emergence of a relaxor state - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2014

Interplay between pressure and local symmetry in (Pb1-3/2x Lax)(Zr60 Ti40) O3 Emergence of a relaxor state

Résumé

This study aims at inquiring into the role of hydrostatic pressure in driving the relaxor behavior within a local-symmetry-based approach to relaxor ferroelectrics. Results reveal the occurrence of a pressure-induced ferroelectric-to-relaxor crossover, clearly reflected in the experiment-matching temperature-pressure phase diagram of lanthanum-modified lead zirconate titanate. Relaxor behavior is found to occur under pressure and upon cooling due to the nucleation of local order within fractal regions, as an incipient state towards percolating ferroelectric order. Further analysis of the geometrical features of ordering process points to a manifest nontrivial disruption of the balance between competing interactions under the conjugated effects of pressure and local-symmetry constraints. © 2014 American Physical Society.

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Matériaux
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Dates et versions

hal-02277215 , version 1 (03-09-2019)

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Citer

Y. Nahas, S. Prokhorenko, I. Kornev. Interplay between pressure and local symmetry in (Pb1-3/2x Lax)(Zr60 Ti40) O3 Emergence of a relaxor state. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2014, 90 (18), pp.180102. ⟨10.1103/PhysRevB.90.180102⟩. ⟨hal-02277215⟩
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