X-ray diffuse scattering observations for SrxBa1-xNb2O6 single crystals with x=0.35 and 0.81

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F18%3A00498087" target="_blank" >RIV/68378271:_____/18:00498087 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1080/01411594.2018.1507034" target="_blank" >http://dx.doi.org/10.1080/01411594.2018.1507034</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1080/01411594.2018.1507034" target="_blank" >10.1080/01411594.2018.1507034</a>

Result language
angličtina
Original language name
X-ray diffuse scattering observations for SrxBa1-xNb2O6 single crystals with x=0.35 and 0.81
Original language description
In an attempt to contribute to understanding of structure–property relationship in ferroelectric relaxor SrxBa1−xNb2O6, we studied X-ray diffuse scattering for compositions with x = 0.35 and x = 0.81 at room temperature. Within signal-rich reciprocal-space images, features related to (i) local deformation due to chemical inhomogeneity, (ii) incommensurate modulation and (iii) fluctuation of polarization have been identified. There are substantial differences between the two compositions, some of which can be straightforwardly attributed to different states of ferroelectric ordering in these materials. In the Sr-rich composition, we have observed additional features in the form of ⟨110⟩-oriented streaks on hk(n/2) planes. They indicate that transverse correlation of uniaxial polarization is anisotropic. At the same time, the fact that streaks appear also on the superlattice planes raises the question whether the modulation and polarization order parameter are interrelated.n
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
<a href="/en/project/GA16-09142S" target="_blank" >GA16-09142S: Lattice dynamics and dielectric response of tetragonal tungsten-bronze oxides</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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