Detail publikačního výsledku

Tuning photoluminescence via entropy engineering in high entropy Re2Zr2O7 ceramics

ROTTER, M.; KLEMENT, R.; MICHÁLKOVÁ, M.; ŠČASNOVIČ, E.; HAVLÍKOVÁ, T.; MACA, K.; GALUSEK, D.; DRDLÍKOVÁ, K.

Originální název

Tuning photoluminescence via entropy engineering in high entropy Re2Zr2O7 ceramics

Anglický název

Tuning photoluminescence via entropy engineering in high entropy Re2Zr2O7 ceramics

Druh

Článek Scopus

Originální abstrakt

Er³⁺-doped multicomponent RE2Zr2O7 (RE = Y, Lu, Gd, La, and Yb) ceramics with tailored non-equimolar ratios were synthesised via combustion synthesis to explore whether configurational entropy influences their photoluminescent properties. The compositions located near the pyrochlore–defect fluorite boundary showed slight structural deviations related to cation-size effects. In contrast, compositions designed to stabilise the defect fluorite structure were readily obtained as single-phase ceramics after sintering at 1650 °C for 4 h in air and served as high, medium, and low entropy model systems. Their photoluminescent properties indicate that increasing configurational entropy is closely associated with enhanced down-shifting and up-conversion emission compared with the low entropy control sample. These results demonstrate that entropy-guided compositional design enables robust stabilisation of the defect fluorite structure and provides an effective route for improving luminescent performance of Er-doped RE2Zr2O7 ceramics.

Anglický abstrakt

Er³⁺-doped multicomponent RE2Zr2O7 (RE = Y, Lu, Gd, La, and Yb) ceramics with tailored non-equimolar ratios were synthesised via combustion synthesis to explore whether configurational entropy influences their photoluminescent properties. The compositions located near the pyrochlore–defect fluorite boundary showed slight structural deviations related to cation-size effects. In contrast, compositions designed to stabilise the defect fluorite structure were readily obtained as single-phase ceramics after sintering at 1650 °C for 4 h in air and served as high, medium, and low entropy model systems. Their photoluminescent properties indicate that increasing configurational entropy is closely associated with enhanced down-shifting and up-conversion emission compared with the low entropy control sample. These results demonstrate that entropy-guided compositional design enables robust stabilisation of the defect fluorite structure and provides an effective route for improving luminescent performance of Er-doped RE2Zr2O7 ceramics.

Klíčová slova

High entropy ceramic;Luminescence;Medium entropy ceramic;RE2Zr2O7

Klíčová slova v angličtině

High entropy ceramic;Luminescence;Medium entropy ceramic;RE2Zr2O7

Autoři

ROTTER, M.; KLEMENT, R.; MICHÁLKOVÁ, M.; ŠČASNOVIČ, E.; HAVLÍKOVÁ, T.; MACA, K.; GALUSEK, D.; DRDLÍKOVÁ, K.

Vydáno

21.05.2026

Nakladatel

Elsevier

Periodikum

Journal of the European Ceramic Society

Svazek

46

Číslo

14

Stát

Spojené království Velké Británie a Severního Irska

Strany od

118516

Strany počet

11

URL

https://www.sciencedirect.com/science/article/pii/S0955221926003924

Plný text v Digitální knihovně

http://hdl.handle.net/11012/256778

BibTex

@article{BUT211673,
  author="Marek {Rotter} and  {} and  {} and Erik {Ščasnovič} and Tereza {Havlíková} and Karel {Maca} and  {} and Katarina {Drdlíková}",
  title="Tuning photoluminescence via entropy engineering in high entropy Re2Zr2O7 ceramics",
  journal="Journal of the European Ceramic Society",
  year="2026",
  volume="46",
  number="14",
  pages="11",
  doi="10.1016/j.jeurceramsoc.2026.118516",
  issn="0955-2219",
  url="https://www.sciencedirect.com/science/article/pii/S0955221926003924"
}