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

Result code in 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>

Alternative codes found

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

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JA - Electronics and optoelectronics

OECD FORD branch

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Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2015

Confidentiality

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

Name of the periodical

Materials Chemistry and Physics

ISSN

0254-0584

e-ISSN

—

Volume of the periodical

168

Issue of the periodical within the volume

NOVEMBER

Country of publishing house

CH - SWITZERLAND

Number of pages

9

Pages from-to

159-167

UT code for WoS article

000367493000023

EID of the result in the Scopus database

2-s2.0-84959508947