Detail publikace

Optical and mechanical properties of Mn-doped transparent alumina and their comparison with selected rare earth and transient metal doped aluminas

DRDLÍKOVÁ, K. DRDLÍK, D. HADRABA, H. KLEMENT, R. MACA, K.

Originální název

Optical and mechanical properties of Mn-doped transparent alumina and their comparison with selected rare earth and transient metal doped aluminas

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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 ∼670 μs. 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.

Klíčová slova

Doped alumina; Manganese; Optical properties; Mechanical properties; Fractography

Autoři

DRDLÍKOVÁ, K.; DRDLÍK, D.; HADRABA, H.; KLEMENT, R.; MACA, K.

Vydáno

2. 11. 2020

Nakladatel

Elsevier

ISSN

0955-2219

Periodikum

Journal of the European Ceramic Society

Ročník

40

Číslo

14

Stát

Spojené království Velké Británie a Severního Irska

Strany od

4894

Strany do

4900

Strany počet

7

URL

https://www.sciencedirect.com/science/article/pii/S0955221920300510

BibTex

@article{BUT164622,
  author="Katarina {Drdlíková} and Daniel {Drdlík} and Hynek {Hadraba} and Róbert {Klement} and Karel {Maca}",
  title="Optical and mechanical properties of Mn-doped transparent alumina and their comparison with selected rare earth and transient metal doped aluminas",
  journal="Journal of the European Ceramic Society",
  year="2020",
  volume="40",
  number="14",
  pages="4894--4900",
  doi="10.1016/j.jeurceramsoc.2020.01.041",
  issn="0955-2219",
  url="https://www.sciencedirect.com/science/article/pii/S0955221920300510"
}