Domain structure of rhombohedral PbTixZr1-xO3 crystals

Eknadiosiants, E. I.; Бородин, В. З.; Smotrakov, V. G.; Eremkin, V. V.; Pinskaya, A. N.

doi:10.1080/00150199008224413

Cited by 16 publications

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“…The ferroelectric phases of perovskite materials are often multi-domain systems because of the energy degeneracy of several variants. Many fascinating domain patterns have been observed in them, for example, in tetragonal thin film of Pb͑Zr x Ti 1Ϫx )O 3 ͑PZT͒, 1 tetragonal PbTiO 3 , 2 rhombohedral PZT, 3 and Pb͑Zn 1/3 Nb 2/3 )O 3 -PbTiO 3 ͑PZN-PT͒ 4,5 crystals, and in orthorhombic phase BaTiO 3 6 and KNbO 3 7,8 crystals. In KNbO 3 , the S-wall and W-wall intersections have also been observed.…”

Section: Introductionmentioning

confidence: 99%

Permissible symmetries of multi-domain configurations in perovskite ferroelectric crystals

Erhart

Cao²

2003

Journal of Applied Physics

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Articles you may be interested in Large electrocaloric effect induced by the multi-domain to mono-domain transition in ferroelectricsPermissible symmetries of multi-domain structures are analyzed in the m3m→3m, m3m→4mm and m3m→mm2 ferroelectric species. Domain structures produced by the application of external electric and/or mechanical fields that allow for the formation of two-dimensional domain superlattice are described in terms of effective group symmetry. Based on our analysis, the most perspective directions for properties enhancement through domain engineering are specified for perovskite ferroelectric crystals having tetragonal, rhombohedral, and orthorhombic symmetries.

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Section: Introductionmentioning

confidence: 99%

Permissible symmetries of multi-domain configurations in perovskite ferroelectric crystals

Erhart

Cao²

2003

Journal of Applied Physics

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“…3, a linear relationship (8) derivative of Eq. (2) For the PZT system, R is negative, 24 and so the rotostric- Combining with Eq. (5) yields electrostriction alone.…”

Section: (10)mentioning

confidence: 99%

“…th pe on the sample while it is heated and cooled over the existng mecrocracks heal (or recombine) cauising anr desie temperature range. [24).…”

Section: Dnrmoductionmentioning

confidence: 99%

Piezoelectric and Electrostrictive Materials for Transducers Applications. Volume 2

Cross¹,

Newnham²,

Bhalla³

et al. 1992

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“…The same result is obtained if a monoclinic phase appears between the other two, as proposed by Noheda et al [3], because the presence of a monoclinic phase further increases the number of possible orientations for the polarization vector. Therefore, it is of great importance to study the domain distribution with the composition in PZT single crystal with chemical compositions near that of the MPB and try to complete the literature data [4][5][6][7].PZT single crystals with a chemical composition in the tetragonal side of the phase diagram (x=0.35 and x=0.42) were produced by a flux method, using PbO-KF-PbCl 2, in the molar proportion of 2:1:2, and 4wt% of B 2 O 3 [8]. In this work, the piezoresponse force microscopy (PFM) was used to investigate the domains distribution in the PZT single crystals.…”

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Ferroelectric Domain Structure of PZT Tetragonal Single Crystals Analysed by Scanning Probe Microscopy

et al. 2009

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From the application point of view, the most interesting compositions in the lead zirconate titanate solid solutions, PbZr x Ti 1-x O 3 (PZT), are those near the centre of the phase diagram, where tetragonal and rhombohedral phases are separated by a boundary nearly independent on temperature. The composition of this so-called morphotropic phase boundary (MPB) is approximately 52/48 at room temperature. The piezoelectric coefficients, electromechanical coupling coefficients, dielectric permittivity and remnant polarization measured on ceramic samples reach a maximum in this region, not necessarily at the same composition [1], which explains why these compositions are technologically so interesting.The maximum of the polarization in the vicinity of the MPB in polycrystalline materials has been explained by the coexistence of the rhombohedral and tetragonal phases, which increases the number of possible orientations for the polarization vector (P o ), thus facilitating the domains reorientation [2]. The same result is obtained if a monoclinic phase appears between the other two, as proposed by Noheda et al. [3], because the presence of a monoclinic phase further increases the number of possible orientations for the polarization vector. Therefore, it is of great importance to study the domain distribution with the composition in PZT single crystal with chemical compositions near that of the MPB and try to complete the literature data [4][5][6][7].PZT single crystals with a chemical composition in the tetragonal side of the phase diagram (x=0.35 and x=0.42) were produced by a flux method, using PbO-KF-PbCl 2, in the molar proportion of 2:1:2, and 4wt% of B 2 O 3 [8]. In this work, the piezoresponse force microscopy (PFM) was used to investigate the domains distribution in the PZT single crystals.The structure of the domains was determined (Fig. 1a), b) e c)). The domain distribution found for each of these crystals is different and a decrease of the domain size with the increase of Zr content could be observed. Further work is needed to explain this behaviour. From a structural point of view, an opposite effect was expected, taking into account the decrease of the unit cell distortion upon approaching the MPB composition [9]. The role of possible extrinsic effects, such as defects or stresses, on the domain size should be considered.

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Domain structure of rhombohedral PbTixZr1-xO3 crystals

Cited by 16 publications

References 0 publications

Permissible symmetries of multi-domain configurations in perovskite ferroelectric crystals

Permissible symmetries of multi-domain configurations in perovskite ferroelectric crystals

Piezoelectric and Electrostrictive Materials for Transducers Applications. Volume 2

Ferroelectric Domain Structure of PZT Tetragonal Single Crystals Analysed by Scanning Probe Microscopy

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