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Spectroscopic reflects of structural disorder in Eu3+/Pr3+ -doped La0.4Gd1.6Zr2O7 transparent ceramics.
Autorzy
Rok wydania
2018
Czasopismo
Journal of Alloys and Compounds
Numer woluminu
769
Strony
18-26
DOI
10.1016/j.jallcom.2018.07.233
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Perfectly transparent ceramics of La0.4Gd1.6Zr2O7 doped with either Eu3+ or Pr3+ ions were prepared by high-temperature vacuum sintering. Results of the Rietveld structure refinement and spectroscopic properties of the ceramics are presented and discussed in details. Photoluminescence characteristics support the non-uniformity in the crystal structure of ceramics. X-ray excited luminescence of La0.4Gd1.6Zr2O7:Eu was rather inefficient and the Pr-doped ceramics showed no Pr-related radioluminescence. Instead they produced Eu3+emission characteristic for Gd2O3:Eu phase not detected in X-ray diffraction patterns.
Słowa kluczowe
Ceramics, Optical materials, Order-disorder effect, Rare earth alloys and compounds
Adres publiczny
http://dx.doi.org/10.1016/j.jallcom.2018.07.233
Strona internetowa wydawcy
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