Role of reaction atmosphere in preparation of potassium tantalate through sol-gel method

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F13%3A00421730" target="_blank" >RIV/68378271:_____/13:00421730 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388980:_____/13:00421730 RIV/68081731:_____/13:00421730

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s10971-013-3158-7" target="_blank" >http://dx.doi.org/10.1007/s10971-013-3158-7</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10971-013-3158-7" target="_blank" >10.1007/s10971-013-3158-7</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Role of reaction atmosphere in preparation of potassium tantalate through sol-gel method

Popis výsledku v původním jazyce

Potassium tantalate (KT) thin films and powders of both K2Ta2O6 (KT pyrochlore) and KTaO3 (KT perovskite) structures were prepared by means of chemical solution deposition method using Si(111) with ZnO and MgO buffer layers as a substrate. The influenceof reaction atmosphere on reaction pathway and phase composition for both KT powders, and KT thin films has been studied mainly by means of powder diffraction and infrared spectroscopy. When an oxygen flow instead of static air atmosphere has been used the process of pyrolysis in oxygen runs over much narrower temperature interval (200-300 A degrees C), relatively to air atmosphere (200-600 A degrees C) and almost no (in case of powders), or no (in case of thin films) pyrochlore intermediate phase has been detected in comparison with treatment in air, where the pyrochlore phase is stable at temperatures 500-600 A degrees C (powders). KT perovskite phase starts to crystallize at temperatures 50A degrees and 150 A degrees C lower compared

Název v anglickém jazyce

Role of reaction atmosphere in preparation of potassium tantalate through sol-gel method

Popis výsledku anglicky

Potassium tantalate (KT) thin films and powders of both K2Ta2O6 (KT pyrochlore) and KTaO3 (KT perovskite) structures were prepared by means of chemical solution deposition method using Si(111) with ZnO and MgO buffer layers as a substrate. The influenceof reaction atmosphere on reaction pathway and phase composition for both KT powders, and KT thin films has been studied mainly by means of powder diffraction and infrared spectroscopy. When an oxygen flow instead of static air atmosphere has been used the process of pyrolysis in oxygen runs over much narrower temperature interval (200-300 A degrees C), relatively to air atmosphere (200-600 A degrees C) and almost no (in case of powders), or no (in case of thin films) pyrochlore intermediate phase has been detected in comparison with treatment in air, where the pyrochlore phase is stable at temperatures 500-600 A degrees C (powders). KT perovskite phase starts to crystallize at temperatures 50A degrees and 150 A degrees C lower compared

Druh

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

CEP obor

CA - Anorganická chemie

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Journal of Sol-Gel Science and Technology

ISSN

0928-0707

e-ISSN

—

Svazek periodika

68

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

15

Strana od-do

219-233

Kód UT WoS článku

000326701600009

EID výsledku v databázi Scopus

—