Počet záznamů: 1
Optical and mechanical properties of mn-doped transparent alumina and their comparison with selected rare earth and transient metal doped aluminas
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SYSNO ASEP 0541330 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Optical and mechanical properties of mn-doped transparent alumina and their comparison with selected rare earth and transient metal doped aluminas Tvůrce(i) Drdlíková, K. (CZ)
Drdlík, D. (CZ)
Hadraba, Hynek (UFM-A) RID, ORCID
Klement, R. (SK)
Maca, K. (CZ)Celkový počet autorů 5 Zdroj.dok. Journal of the European Ceramic Society. - : Elsevier - ISSN 0955-2219
Roč. 40, č. 14 (2020), s. 4894-4900Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova manganese oxide ; grain-size ; submicrometer alumina ; ceramics ; al2o3 ; densification ; hardness ; Doped alumina ; Manganese ; Optical properties ; Mechanical properties ; Fractography Vědní obor RIV JH - Keramika, žáruvzdorné materiály a skla Obor OECD Ceramics CEP LQ1601 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Omezený přístup Institucionální podpora UFM-A - RVO:68081723 UT WOS 000556262000023 EID SCOPUS 85078359256 DOI 10.1016/j.jeurceramsoc.2020.01.041 Anotace Mn-doped translucent alumina prepared in this work was characterised in terms of densification process, microstructure, optical and mechanical properties. The manganese effect was compared with the influence of chromium, erbium and europium in previously prepared doped transparent alumina. Contrary to them, manganese accelerates both densification and grain growth. Real in line transmittance (RIT) at 632.8 nm and transmission/diffuse reflectance spectra in UV-VIS-NIR range of Mn-doped alumina were measured. The lower RIT values and rapidly decreased transmittance/reflectance below 800 nm are caused by relatively high absorption of light by Mn species and by increased grain size. The deep red emission of Mn4+ centres that almost fade at higher manganese concentration was indicated in photoluminescence spectra, with a decay time of similar to 670 mu s. The dopant introduction in all cases resulted in an increase in hardness of doped alumina up to 20 % compared to undoped alumina and a decrease in related fracture toughness. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2022 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S0955221920300510?via%3Dihub
Počet záznamů: 1