New FeVTaO6 compound-synthesis, structure and selected properties

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62690094%3A18470%2F24%3A50021374" target="_blank" >RIV/62690094:18470/24:50021374 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s10853-023-09168-x" target="_blank" >https://link.springer.com/article/10.1007/s10853-023-09168-x</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10853-023-09168-x" target="_blank" >10.1007/s10853-023-09168-x</a>

Jazyk výsledku

angličtina

Název v původním jazyce

New FeVTaO6 compound-synthesis, structure and selected properties

Popis výsledku v původním jazyce

A new ceramic compound of the chemical formula FeVTaO6 was obtained in polycrystalline form, as a result of a high-temperature reaction between Fe2O3, Ta2O5 and VO2 mixed at the molar ratio 1:1:2 as well as in the reaction of equimolar mixture of FeTaO4 with VO2. The synthesis of this new compound has also been carried out by mechanochemical method realized by high-energy ball milling of some mixture of reactants. FeVTaO6, in both cases, was obtained under an atmosphere of deoxygenated argon. The new compound was characterized by XRD, DTA-TG, IR, SEM/EDX, TEM, XRF and UV-vis-DRS methods. Using X-ray powder diffraction, the lattice parameters of the unit cell and the parameters of the positioning of atoms (Rietveld analysis) were determined, and grain sizes were obtained on the basis of diffraction line broadening. The results showed that FeVTaO6 crystallizes in the tetragonal system with rutile-type structure. As shown in the DTA results, regardless of the synthesis method, FeVTaO6 is stable in argon atmosphere up to similar to 1225 degrees C and in air up to similar to 925 degrees C. Based on the UV-Vis-DR spectra, it was also established that the obtained compound is a semiconductor. The energy gap value determined for the compound obtained by the solid-state method is Eg similar to 1.75 eV, and for the compound obtained by the mechanochemical method Eg similar to 2.10 eV. [GRAPHICS] .

Název v anglickém jazyce

New FeVTaO6 compound-synthesis, structure and selected properties

Popis výsledku anglicky

A new ceramic compound of the chemical formula FeVTaO6 was obtained in polycrystalline form, as a result of a high-temperature reaction between Fe2O3, Ta2O5 and VO2 mixed at the molar ratio 1:1:2 as well as in the reaction of equimolar mixture of FeTaO4 with VO2. The synthesis of this new compound has also been carried out by mechanochemical method realized by high-energy ball milling of some mixture of reactants. FeVTaO6, in both cases, was obtained under an atmosphere of deoxygenated argon. The new compound was characterized by XRD, DTA-TG, IR, SEM/EDX, TEM, XRF and UV-vis-DRS methods. Using X-ray powder diffraction, the lattice parameters of the unit cell and the parameters of the positioning of atoms (Rietveld analysis) were determined, and grain sizes were obtained on the basis of diffraction line broadening. The results showed that FeVTaO6 crystallizes in the tetragonal system with rutile-type structure. As shown in the DTA results, regardless of the synthesis method, FeVTaO6 is stable in argon atmosphere up to similar to 1225 degrees C and in air up to similar to 925 degrees C. Based on the UV-Vis-DR spectra, it was also established that the obtained compound is a semiconductor. The energy gap value determined for the compound obtained by the solid-state method is Eg similar to 1.75 eV, and for the compound obtained by the mechanochemical method Eg similar to 2.10 eV. [GRAPHICS] .

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

JOURNAL OF MATERIALS SCIENCE

ISSN

0022-2461

e-ISSN

1573-4803

Svazek periodika

59

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

382-394

Kód UT WoS článku

001126015200007

EID výsledku v databázi Scopus

2-s2.0-85179652351