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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/GA16-09142S" target="_blank" >GA16-09142S: Dynamika krystalové mříže a dielektrická odezva v tetragonálních oxidech se strukturou wolframového bronzu</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Phase Transitions

ISSN

0141-1594

e-ISSN

—

Svazek periodika

91

Číslo periodika v rámci svazku

9-10

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

969-975

Kód UT WoS článku

000446595600007

EID výsledku v databázi Scopus

2-s2.0-85052072359