Sol-gel route to nanocrystalline Eu2Ti2O7 films with tailored structural and optical properties

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985882%3A_____%2F19%3A00518376" target="_blank" >RIV/67985882:_____/19:00518376 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081723:_____/19:00518376

Výsledek na webu

<a href="https://ceramics.onlinelibrary.wiley.com/doi/full/10.1111/jace.16524" target="_blank" >https://ceramics.onlinelibrary.wiley.com/doi/full/10.1111/jace.16524</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/jace.16524" target="_blank" >10.1111/jace.16524</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Sol-gel route to nanocrystalline Eu2Ti2O7 films with tailored structural and optical properties

Popis výsledku v původním jazyce

We present a generic sol-gel approach for the preparation of highly transparent europium titanate Eu2Ti2O7 films with tailored structural and optical properties. The films were prepared by a sol-gel process and thermally treated in a rapid thermal annealing furnace. We determined the effects of the annealing temperature on structural, morphological, and optical properties of the films. We evaluated film's optical constants. The size of the primary nanocrystals and the film's refractive index were tailored by the annealing temperature. The crystallization of Eu2Ti2O7 started at 800 degrees C and the nanocrystals grew with increasing annealing temperature reaching the size from 20 nm to 100 nm. The energy of nanocrystal growth was 21 +/- 3 kJ center dot mol(-1). Increasing nanocrystal size caused the regular growth of the refractive index recorded at 632 nm from 2.07 to 2.17 for the films annealed at 800 degrees C and 1200 degrees C, respectively. These results provide fundamental information about the effects of the structure and the morphology of the films on their optical properties. The presented approach can be extended to other rare earth-doped titanates and these films can be used as passive protective coatings as well as active materials suitable for photonic and spintronic applications

Název v anglickém jazyce

Sol-gel route to nanocrystalline Eu2Ti2O7 films with tailored structural and optical properties

Popis výsledku anglicky

We present a generic sol-gel approach for the preparation of highly transparent europium titanate Eu2Ti2O7 films with tailored structural and optical properties. The films were prepared by a sol-gel process and thermally treated in a rapid thermal annealing furnace. We determined the effects of the annealing temperature on structural, morphological, and optical properties of the films. We evaluated film's optical constants. The size of the primary nanocrystals and the film's refractive index were tailored by the annealing temperature. The crystallization of Eu2Ti2O7 started at 800 degrees C and the nanocrystals grew with increasing annealing temperature reaching the size from 20 nm to 100 nm. The energy of nanocrystal growth was 21 +/- 3 kJ center dot mol(-1). Increasing nanocrystal size caused the regular growth of the refractive index recorded at 632 nm from 2.07 to 2.17 for the films annealed at 800 degrees C and 1200 degrees C, respectively. These results provide fundamental information about the effects of the structure and the morphology of the films on their optical properties. The presented approach can be extended to other rare earth-doped titanates and these films can be used as passive protective coatings as well as active materials suitable for photonic and spintronic applications

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

<a href="/cs/project/LD15122" target="_blank" >LD15122: Nové materiály a komponenty pro pokročilé vláknové lasery</a><br>

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Journal of the American Ceramic Society

ISSN

0002-7820

e-ISSN

—

Svazek periodika

102

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

6713-6723

Kód UT WoS článku

000484534300036

EID výsledku v databázi Scopus

2-s2.0-85065970580