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Domain structures in monoclinic Pb[(Zn1/3Nb2/3)0.91Ti0.09] O3 poled single crystals

Abstract : A tetragonal (T) ↔ monoclinic (M) phase transition characterized by a wide thermal hysteresis is observed in Pb(Zn1/3Nb2/3)O3-PbTiO3 (PZN-PT) single crystals close to the morphotropic composition PZN-9%PT. The domain structure of crystals, determined by X-ray diffraction and optical observations, is dependent on the poling crystallographic direction. A monoclinic quasi-single domain structure is obtained by poling along the pseudocubic [101] direction whereas an unexpected monoclinic multidomain state with macroscopic 2 mm symmetry can be obtained for [001] poled crystals. Finally it is shown that the largest piezoelectric response corresponds to the monoclinic multidomain state of [001] poled crystals.
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Submitted on : Monday, August 26, 2019 - 12:39:15 PM
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A.-E. Renault, Hichem Dammak, G. Calvarin, M.P. Thi, P. Gaucher. Domain structures in monoclinic Pb[(Zn1/3Nb2/3)0.91Ti0.09] O3 poled single crystals. Japanese Journal of Applied Physics, Part 1 Regular Papers and Short Notes and Review Papers, 2002, 41 (6 A), pp.3846-3850. ⟨10.1143/JJAP.41.3846⟩. ⟨hal-02270837⟩



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