Počet záznamů: 1
Crystallization kinetics and structural properties of nanocrystalline europium-yttrium-titanate (Eu0.5Y0.5)2Ti2O7
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SYSNO ASEP 0555755 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Crystallization kinetics and structural properties of nanocrystalline europium-yttrium-titanate (Eu0.5Y0.5)2Ti2O7 Tvůrce(i) Mrázek, Jan (URE-Y) RID, ORCID
Bysakh, S. (IN)
Skála, Roman (GLU-S) RID, SAI, ORCID
Mráček, A. (CZ)
Dhar, A. (IN)
Bartoň, Ivo (URE-Y) ORCID, RID
Kašík, Ivan (URE-Y) RIDCelkový počet autorů 7 Číslo článku 103501 Zdroj.dok. Advanced Powder Technology. - : Elsevier - ISSN 0921-8831
Roč. 33, č. 3 (2022)Poč.str. 9 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova Nucleation ; Sol-gel ; Nanomaterials ; Rare earth compounds Vědní obor RIV BH - Optika, masery a lasery Obor OECD Optics (including laser optics and quantum optics) CEP GF21-45431L GA ČR - Grantová agentura ČR Způsob publikování Omezený přístup Institucionální podpora URE-Y - RVO:67985882 ; GLU-S - RVO:67985831 UT WOS 000829861000012 EID SCOPUS 85124799480 DOI 10.1016/j.apt.2022.103501 Anotace We present a versatile sol–gel approach for nanocrystalline (Eu0.5Y0.5)2Ti2O7. We determined the crystallization kinetics of the nucleation and the nucleation mechanism. The crystallization temperature was 1050.1 ± 0.8 K, and the activation energy of crystallization was 605 kJ mol−1. The nanocrystal growth started by homogenous nucleation with a constant nucleation rate, and the nanocrystal growth was limited by mass transfer through the phase boundary. The crystal structure of (Eu0.5Y0.5)2Ti2O7 was refined from the powder diffraction data using the Rietveld method, and the results were compared with the data recorded for the isostructural compounds, Eu2Ti2O7 and Y2Ti2O7. We proved the existence of a single phase of (Eu0.5Y0.5)2Ti2O7 and the regular distribution of Eu3+ and Y3+ ions inside the crystal lattice. The results provide key information regarding the crystallization properties and crystal structure of nanocrystalline (Eu0.5Y0.5)2Ti2O7. This knowledge is necessary for preparing pure nanocrystalline powders with tailored structural properties that are suitable for photonic applications Pracoviště Ústav fotoniky a elektroniky Kontakt Petr Vacek, vacek@ufe.cz, Tel.: 266 773 413, 266 773 438, 266 773 488 Rok sběru 2023 Elektronická adresa https://doi.org/10.1016/j.apt.2022.103501
Počet záznamů: 1