Number of the records: 1  

X-ray diffuse scattering observations for Sr.sub.x./sub.Ba.sub.1-x./sub.Nb.sub.2./sub.O.sub.6./sub. single crystals with x=0.35 and 0.81

  1. 1.
    SYSNO ASEP0498087
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleX-ray diffuse scattering observations for SrxBa1-xNb2O6 single crystals with x=0.35 and 0.81
    Author(s) Pasciak, Marek (FZU-D) ORCID
    Kopecký, Miloš (FZU-D) RID, ORCID
    Kub, Jiří (FZU-D) RID, ORCID
    Fábry, Jan (FZU-D) RID, ORCID, SAI
    Dec, J. (PL)
    Ondrejkovič, Petr (FZU-D) RID, ORCID
    Hlinka, Jiří (FZU-D) RID, ORCID
    Buixaderas, Elena (FZU-D) RID, ORCID
    Number of authors8
    Source TitlePhase Transitions. - : Taylor & Francis - ISSN 0141-1594
    Roč. 91, 9-10 (2018), s. 969-975
    Number of pages7 s.
    Publication formPrint - P
    Languageeng - English
    CountryGB - United Kingdom
    Keywordsrelaxor ferroelectrics ; disorder ; diffuse scattering
    Subject RIVBM - Solid Matter Physics ; Magnetism
    OECD categoryCondensed matter physics (including formerly solid state physics, supercond.)
    R&D ProjectsGA16-09142S GA ČR - Czech Science Foundation (CSF)
    Institutional supportFZU-D - RVO:68378271
    UT WOS000446595600007
    EID SCOPUS85052072359
    DOI10.1080/01411594.2018.1507034
    AnnotationIn 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.
    WorkplaceInstitute of Physics
    ContactKristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
    Year of Publishing2019
Number of the records: 1  

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