Publication detail

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.

Original Title

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

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

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

Authors

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

Released

2. 11. 2020

Publisher

Elsevier

ISBN

0955-2219

Periodical

Journal of the European Ceramic Society

Year of study

40

Number

14

State

United Kingdom of Great Britain and Northern Ireland

Pages from

4894

Pages to

4900

Pages count

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"
}