Sol-gel synthesis and crystallization kinetics of dysprosium-titanate Dy2Ti2O7 for photonic applications

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F15%3A10317915" target="_blank" >RIV/00216208:11310/15:10317915 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985831:_____/15:00455147 RIV/67985882:_____/15:00455147 RIV/68081723:_____/15:00455147 RIV/70883521:28610/15:43874034

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.matchemphys.2015.11.015" target="_blank" >http://dx.doi.org/10.1016/j.matchemphys.2015.11.015</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matchemphys.2015.11.015" target="_blank" >10.1016/j.matchemphys.2015.11.015</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Sol-gel synthesis and crystallization kinetics of dysprosium-titanate Dy2Ti2O7 for photonic applications

Popis výsledku v původním jazyce

We present a generic sol-gel approach for the preparation of nanocrystalline Dy2Ti2O7. This approach allows the preparation of powders and highly transparent thin films having nanocrystals of a tailored size. The thermal evolution of these nanocrystals was followed by conventional structural methods and furthermore, we determine both the kinetic parameters of the nanocrystal nucleation process from amorphous xerogel as well as the crystallization mechanism. The crystallization temperature was 798 +/- 2degrees C. The nanocrystal growth started by homogeneous nucleation with a constant nucleation rate followed by three dimensional growth. The activation energy of the crystallization was 780 kJ mol(-1), and the energy of nanocrystal growth was 24.4 kJ mol(-1). We demonstrate the existence of pure pyrochlore structure of Dy2Ti2O7 with the lattice parameter a equal to 10.2 angstrom. The structural evolution of nanocrystalline thin films was identical to that of the evolution of xerogels. A

Název v anglickém jazyce

Sol-gel synthesis and crystallization kinetics of dysprosium-titanate Dy2Ti2O7 for photonic applications

Popis výsledku anglicky

We present a generic sol-gel approach for the preparation of nanocrystalline Dy2Ti2O7. This approach allows the preparation of powders and highly transparent thin films having nanocrystals of a tailored size. The thermal evolution of these nanocrystals was followed by conventional structural methods and furthermore, we determine both the kinetic parameters of the nanocrystal nucleation process from amorphous xerogel as well as the crystallization mechanism. The crystallization temperature was 798 +/- 2degrees C. The nanocrystal growth started by homogeneous nucleation with a constant nucleation rate followed by three dimensional growth. The activation energy of the crystallization was 780 kJ mol(-1), and the energy of nanocrystal growth was 24.4 kJ mol(-1). We demonstrate the existence of pure pyrochlore structure of Dy2Ti2O7 with the lattice parameter a equal to 10.2 angstrom. The structural evolution of nanocrystalline thin films was identical to that of the evolution of xerogels. A

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

—

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Materials Chemistry and Physics

ISSN

0254-0584

e-ISSN

—

Svazek periodika

168

Číslo periodika v rámci svazku

NOVEMBER

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

9

Strana od-do

159-167

Kód UT WoS článku

000367493000023

EID výsledku v databázi Scopus

2-s2.0-84959508947