Substrate-induced strain control of (Mn, Fe, Co, Ni)-doping effects in SrTiO3 thin films

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00639199" target="_blank" >RIV/68378271:_____/25:00639199 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0369693" target="_blank" >https://hdl.handle.net/11104/0369693</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d5ma00732a" target="_blank" >10.1039/d5ma00732a</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Substrate-induced strain control of (Mn, Fe, Co, Ni)-doping effects in SrTiO3 thin films

Popis výsledku v původním jazyce

Tailoring chemical composition is the primary route to achieving desired properties of materials, including technologically important ABO₃-type perovskite oxides. This approach is generally assumed to translate directly to thin films. In contrast, this study demonstrates that substrates can significantly modify compositional effects in thin films. Specifically, transition-metal (M = Mn, Fe, Co, Ni) substitution is experimentally investigated in thin films of the archetypal perovskite SrTiO₃ grown by pulsed laser deposition on different substrates. It is found that substrate-induced lattice strain regulates the preferential sites for M substitution and leads to an increase in the direct optical bandgap. In the absence of strain, doping with M cations has no effect on the bandgaps. Substrate-imposed strain and/or substitution are found to induce band tailing and weak sub-gap optical absorption. These findings highlight the unique role of substrates in engineering the chemical composition and functional properties of thin films.

Název v anglickém jazyce

Substrate-induced strain control of (Mn, Fe, Co, Ni)-doping effects in SrTiO3 thin films

Popis výsledku anglicky

Tailoring chemical composition is the primary route to achieving desired properties of materials, including technologically important ABO₃-type perovskite oxides. This approach is generally assumed to translate directly to thin films. In contrast, this study demonstrates that substrates can significantly modify compositional effects in thin films. Specifically, transition-metal (M = Mn, Fe, Co, Ni) substitution is experimentally investigated in thin films of the archetypal perovskite SrTiO₃ grown by pulsed laser deposition on different substrates. It is found that substrate-induced lattice strain regulates the preferential sites for M substitution and leads to an increase in the direct optical bandgap. In the absence of strain, doping with M cations has no effect on the bandgaps. Substrate-imposed strain and/or substitution are found to induce band tailing and weak sub-gap optical absorption. These findings highlight the unique role of substrates in engineering the chemical composition and functional properties of thin films.

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/GA22-10832S" target="_blank" >GA22-10832S: Polaronické feroelektrické vrstvy pro neuromorfní systémy</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Materials Advances

ISSN

2633-5409

e-ISSN

2633-5409

Svazek periodika

6

Číslo periodika v rámci svazku

18

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

6575-6584

Kód UT WoS článku

001556316900001

EID výsledku v databázi Scopus

2-s2.0-105016089911