Double perovskite structure CaLaMgTaO6: Bi3+, Eu3+ co-doped phosphors for optical temperature measurement

2021 ◽  
pp. 118096
Author(s):  
Chenwei Xu ◽  
Chenxia Li ◽  
Degang Deng ◽  
Hua Yu ◽  
Le Wang ◽  
...  
Keyword(s):  
Temperature Measurement ◽  
Perovskite Structure ◽  
Double Perovskite ◽  
Co Doped

scholarly journals Photoluminescence tuning in a novel Bi3+/Mn4+ co-doped La2ATiO6:(A = Mg, Zn) double perovskite structure: phase transition and energy transfer

2018 ◽  
Vol 6 (48) ◽  
pp. 13136-13147 ◽  
Author(s):  
Gongcheng Xing ◽  
Yuxin Feng ◽  
Min Pan ◽  
Yi Wei ◽  
Guogang Li ◽  
...  
Keyword(s):  
Phase Transition ◽  
Energy Transfer ◽  
Perovskite Structure ◽  
Double Perovskite ◽  
Red Emission ◽  
Structure Phase ◽  
Structure Phase Transition ◽  
Co Doped

Enhanced red emission of Mn4+ and photoluminescence tuning by Bi3+ → Mn4+ energy transfer and symmetric changes in Bi3+/Mn4+-doped La2ATiO6 (A = Mg, Zn) double perovskite structure phosphors.

scholarly journals Crystal structures of the triple perovskites Ba2K2Te2O9and Ba2KNaTe2O9, and redetermination of the double perovskite Ba2CaTeO6

2018 ◽  
Vol 74 (7) ◽  
pp. 1006-1009 ◽  
Author(s):  
Matthias Weil
Keyword(s):  
Solid State ◽  
Single Crystals ◽  
Powder Diffraction ◽  
Diffraction Data ◽  
Perovskite Structure ◽  
Double Perovskite ◽  
Powder Diffraction Data ◽  
Space Group ◽  
X Ray ◽  
Group Type

Single crystals of Ba2K2Te2O9(dibarium dipotassium nonaoxidoditellurate), (I), Ba2KNaTe2O9(dibarium potassium sodium nonaoxidoditellurate), (II), and Ba2CaTeO6(dibarium calcium hexaoxidotellurate), (III), were obtained from KNO3/KI or KNO3/NaNO3flux syntheses in platinum crucibles for (I) and (II), or porcelain crucibles for (III). (I) and (II) are isotypic and are members of triple perovskites with general formulaA2[12co]A′[12co]B2[6o]B′[6o]O9. They crystallize in the 6H-BaTiO3structure family in space-group typeP63/mmc, with theA,A′,BandB′ sites being occupied by K, Ba, Te and a second Ba in (I), and in (II) by mixed-occupied (Ba/K), Ba, Te and Na sites, respectively. (III) adopts theA2[12co]B′[6o]B′′[6o]O6double perovskite structure in space-group typeFm-3m, with Ba, Ca and Te located on theA,B′ andB′′sites, respectively. The current refinement of (III) is based on single-crystal X-ray data. It confirms the previous refinement from X-ray powder diffraction data [Fuet al.(2008).J. Solid State Chem.181, 2523–2529], but with higher precision.

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