Local structure of relaxor ferroelectric SrxBa1-xNb2O6 from a pair distribution function analysis
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F19%3A00519366" target="_blank" >RIV/68378271:_____/19:00519366 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/physrevb.99.104102" target="_blank" >https://doi.org/10.1103/physrevb.99.104102</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.99.104102" target="_blank" >10.1103/PhysRevB.99.104102</a>
Alternative languages
Result language
angličtina
Original language name
Local structure of relaxor ferroelectric SrxBa1-xNb2O6 from a pair distribution function analysis
Original language description
Pair distribution function analysis of neutron-scattering data and of ab initio molecular dynamics results have been employed to study short-range order and its temperature dependence in a disordered dielectric material SrxBa1−xNb2O6(x=0.35,0.5, and 0.61). Intrinsic disorder of Sr and Ba atoms and their vacancies introduces local strains to the structure and influences the Nb-O6 octahedra tilting. The resulting complex system of tilts is found to be both temperature and Sr-doping sensitive with the biggest tilt magnitudes reached at low temperatures and high strontium contents, where ferroelectric relaxor behavior appears. We find evidence for two Nb-O6 subsystems with different variations of niobium-oxygen bond lengths, distinct dynamics, and disparate levels of deviation from macroscopic polarization direction. These findings establish a detailed picture of the local structure of SrxBa1−xNb2O6 and provide a deeper insight into the origins of the materials dielectric properties.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
<a href="/en/project/GA16-09142S" target="_blank" >GA16-09142S: Lattice dynamics and dielectric response of tetragonal tungsten-bronze oxides</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review B
ISSN
2469-9950
e-ISSN
—
Volume of the periodical
99
Issue of the periodical within the volume
10
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
1-12
UT code for WoS article
000460720300001
EID of the result in the Scopus database
2-s2.0-85062712309