Publication detail

Luminescent Eu3+-doped transparent alumina ceramics with high hardness

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

Original Title

Luminescent Eu3+-doped transparent alumina ceramics with high hardness

Type

journal article in Web of Science

Language

English

Original Abstract

The Eu3+-doped transparent aluminas were prepared by wet shaping technique followed by pressureless sintering and hot isostatic pressing. The effect of dopant amount on microstructure, real in-line transmission (RIT), photoluminescence (PL) properties, hardness and fracture behaviour was studied. The RIT decreased with increasing amount of the dopant. The PL emission spectra of Al2O3:Eu3+ ceramics exhibited predominant red light emission with the highest intensity (under 394 nm excitation) for material containing 0.125 at.% of Eu3+ and colour coordinates (0.645, 0.355) comparable with commercial red phosphors. The doping resulted in hardness increase from 26.1 GPa for undoped alumina to 27.6 GPa for Eu-doped sample. The study of fracture surfaces showed predominantly intergranular crack propagation micro-mechanism.

Keywords

Alumina; Europium; Luminescence; Transparent ceramics; Mechanical properties

Authors

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

Released

17. 5. 2017

Publisher

Elsevier

ISBN

0955-2219

Periodical

Journal of the European Ceramic Society

Year of study

37

Number

14

State

United Kingdom of Great Britain and Northern Ireland

Pages from

4271

Pages to

4277

Pages count

7

URL

http://www.sciencedirect.com/science/article/pii/S0955221917303394

Full text in the Digital Library

http://hdl.handle.net/11012/70002

BibTex

@article{BUT138837,
  author="Katarina {Drdlíková} and Róbert {Klement} and Hynek {Hadraba} and Daniel {Drdlík} and Dušan {Galusek} and Karel {Maca}",
  title="Luminescent Eu3+-doped transparent alumina ceramics with high hardness",
  journal="Journal of the European Ceramic Society",
  year="2017",
  volume="37",
  number="14",
  pages="4271--4277",
  doi="10.1016/j.jeurceramsoc.2017.05.007",
  issn="0955-2219",
  url="http://www.sciencedirect.com/science/article/pii/S0955221917303394"
}