Počet záznamů: 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
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SYSNO ASEP 0498087 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název X-ray diffuse scattering observations for SrxBa1-xNb2O6 single crystals with x=0.35 and 0.81 Tvůrce(i) 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, ORCIDCelkový počet autorů 8 Zdroj.dok. Phase Transitions. - : Taylor & Francis - ISSN 0141-1594
Roč. 91, 9-10 (2018), s. 969-975Poč.str. 7 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova relaxor ferroelectrics ; disorder ; diffuse scattering Vědní obor RIV BM - Fyzika pevných látek a magnetismus Obor OECD Condensed matter physics (including formerly solid state physics, supercond.) CEP GA16-09142S GA ČR - Grantová agentura ČR Institucionální podpora FZU-D - RVO:68378271 UT WOS 000446595600007 EID SCOPUS 85052072359 DOI 10.1080/01411594.2018.1507034 Anotace 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.
Pracoviště Fyzikální ústav Kontakt Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Rok sběru 2019
Počet záznamů: 1