Chemical-bond effect on epitaxial strain in perovskite sodium niobate

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F18%3A00490074" target="_blank" >RIV/68378271:_____/18:00490074 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1039/c7cp08449h" target="_blank" >http://dx.doi.org/10.1039/c7cp08449h</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c7cp08449h" target="_blank" >10.1039/c7cp08449h</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Chemical-bond effect on epitaxial strain in perovskite sodium niobate

Popis výsledku v původním jazyce

Epitaxial films and heterostructures of perovskite oxides attract tremendous scientific interest because of the unique phenomena therein. Especially important is the epitaxial growth of films subjected to substrate-induced misfit strain. We show here that in contrast to conventional misfit-controlled epitaxy, chemical bonds determine the crystal stability and strain in epitaxial films of sodium niobate on different cubic substrates. Strain relaxation in sodium niobate is independent of misfit magnitude and proceeds through perovskite-specific tilting of oxygen octahedra in addition to common defect formation. The observed structural relaxation evidences a major role of a large internal strain that originates from chemical bonds in the perovskite cell. The effect of chemical bonds on film strain is anticipated to also control the epitaxy of other perovskite oxides and related compounds.

Název v anglickém jazyce

Chemical-bond effect on epitaxial strain in perovskite sodium niobate

Popis výsledku anglicky

Epitaxial films and heterostructures of perovskite oxides attract tremendous scientific interest because of the unique phenomena therein. Especially important is the epitaxial growth of films subjected to substrate-induced misfit strain. We show here that in contrast to conventional misfit-controlled epitaxy, chemical bonds determine the crystal stability and strain in epitaxial films of sodium niobate on different cubic substrates. Strain relaxation in sodium niobate is independent of misfit magnitude and proceeds through perovskite-specific tilting of oxygen octahedra in addition to common defect formation. The observed structural relaxation evidences a major role of a large internal strain that originates from chemical bonds in the perovskite cell. The effect of chemical bonds on film strain is anticipated to also control the epitaxy of other perovskite oxides and related compounds.

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/GA15-15123S" target="_blank" >GA15-15123S: Epitaxně stabilizované perovskitové feroelektricko-magnetické tuhé roztoky</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

Physical Chemistry Chemical Physics

ISSN

1463-9076

e-ISSN

—

Svazek periodika

20

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

4263-4268

Kód UT WoS článku

000424357100043

EID výsledku v databázi Scopus

2-s2.0-85041831220