Contrast reversal of antiparallel domains in Cu-doped (Ba0.25Sr0.75)0.9(K0.5Na0.5)0.2Nb2O6 single crystal with synchrotron topography

Huang, Xinyan; Jiang, Sai; Zeng, W.; Liu, W. J.; Ding, Feng; Chen, H. C.; Jiang, Qixia; Jiang, Jianhua; Wang, Z. G.

doi:10.1063/1.113113

Cited by 11 publications

(6 citation statements)

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“…They are believed to be induced by the local component inhomogeneity or internal strains in KTA crystals [such domain configuration has also been found in KTiOPO4 (Bierlein & Ahmed, 1987) anomalous-scattering mechanism of these domains is the same as that of the uncharged walls. In addition, contrast of ADs arising from the anomalous scattering in BaTiO3 and crystals of tetragonal tungsten bronze structure has been revealed by X-ray or SR topography (Niizeki & Hasegawa, 1964;Huang et al, 1995). All the experimental results show that this technique is applicable to the demonstration of AD configuration and polarization senses in ferroelectric crystals.…”

Section: Anomalous-scattering Contrast Of Antiparallel Domainsmentioning

confidence: 62%

Contrast of Ferroelastic and Ferroelectric Domains in White-Beam X-ray Topographs

Huang¹,

Jiang²,

Liu³

et al. 1996

J Appl Cryst

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White-beam synchrotron topography has been demonstrated to be well suited for observation of all kinds of ferroelastic and ferroelectric twin domains. It is found that the domains that are misorientated against each other always appear as orientation contrasts in the topographs, while the antiparallel domains with parallel lattices may show different diffraction intensity by the synchrotronradiation anomalous-scattering effect. Based on the reciprocal-lattice splitting and the diffraction geometry, a general method of determination of the image displacement associated with two misoriented domains is given to explain their orientation contrast. It is also revealed that the anomalous-scattering contrast of antiparallel domains arises from the anomalous-dispersion terms of the noncentrosymmetric atoms in the unit cell of ferroelectric crystals.strain and polarization senses and to detect symmetric aspects of ferroic twins in a set of reflections recorded simultaneously (Yao, 1992; E1-Korashy, Hou, Dudley & Phillips, Roberts, Sheffen-Lauenroth & Darn, 1987). Based on the extremely strong intensity and natural high collimation of SR, this technique may also be applicable for real-time observation of domain dynamics during the variation of sample environment . In this paper, we demonstrate the SR topographic contrast of several typical ferroelastic and ferroelectric domains, and describe the general mechanisms underlying the domain diffraction by continuous X-ray topography. In fact, the observed contrast features and the diffraction mechanisms presented apply not only to ferroelastic and ferroelectric domains, but also to all other kinds of twinnings or domains generated during growth, by mechanical load and phase transitions.

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Section: Anomalous-scattering Contrast Of Antiparallel Domainsmentioning

confidence: 62%

Contrast of Ferroelastic and Ferroelectric Domains in White-Beam X-ray Topographs

Huang¹,

Jiang²,

Liu³

et al. 1996

J Appl Cryst

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“…Besides these techniques, conventional X-ray anomalous scattering topography with Berg-Barrett or Lang geometry is a useful method of visualizing antiparallel domains, although its application is limited by the long exposure time and only available characteristic radiations of the X-ray tubes [13,14]. The tunability of synchrotron radiation allows us to select any intented wavelength to activate strong anomalous scattering behavior near the absorption edges for the investigation of 180 ~ twin domains in non-centrosymmetrical structure crystal, and the high intensity makes the real-time observation of domain dynamics feasible [15]. The tunability of synchrotron radiation allows us to select any intented wavelength to activate strong anomalous scattering behavior near the absorption edges for the investigation of 180 ~ twin domains in non-centrosymmetrical structure crystal, and the high intensity makes the real-time observation of domain dynamics feasible [15].…”

Section: -Experimentalmentioning

confidence: 99%

X-ray topographic investigation of tungstate flux-grown KTiOAsO4 crystals

et al. 1997

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White-beam synchrotron radiation and Lang topographic investigations of non-linear optical crystal KTiOAsO4 have been car¡ out. It is shown that domains and growth striations are primary planar defects in tungstate flux-grown single crystals. By selecting the wavelength to activate anomalous scattering effect near the absorption edge of the As atom, antiparallel ferroelectric domains are revealed, and in reflection pairs hkl and hkl, the domains demonstrate contrast reversal. The differences in integrated intensity from a pair of opposite domains are also calculated and the harmonics in a Laue spot are given. Finally, the domain wall configurations are discussed in terms of the structural characteristics of KTiOAs04.

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“…And, with the WBSRT, it is possible for several diffraction images with anomalous dispersion effect to be activated simultaneously so that the contrast reversal of 180° domains can be directly observed. [7][8][9] The natural collimation and high intensity of the radiation also make the real-time observation of domain dynamics feasible. As shown in Fig.3, when working with a coherent x-ray beam, and if the phases of the structure factors are different, the 180° ferroelectric domains can be revealed.…”

Section: Ferroelectric Domain Characterizationsmentioning

confidence: 99%

Structural Studies in Perovskite Ferroelectric Crystals Based on Synchrotron Radiation Analysis Techniques

Xiao¹

2011

Ferroelectrics - Characterization and Modeling

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Contrast reversal of antiparallel domains in Cu-doped (Ba0.25Sr0.75)0.9(K0.5Na0.5)0.2Nb2O6 single crystal with synchrotron topography

Cited by 11 publications

References 0 publications

Contrast of Ferroelastic and Ferroelectric Domains in White-Beam X-ray Topographs

Contrast of Ferroelastic and Ferroelectric Domains in White-Beam X-ray Topographs

X-ray topographic investigation of tungstate flux-grown KTiOAsO4 crystals

Structural Studies in Perovskite Ferroelectric Crystals Based on Synchrotron Radiation Analysis Techniques

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