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The Molten Salt Synthesis of (Y 1− x Eu x ) 4 Al 2 O 9 Solid Solution Powders and Their PL Properties
Author(s) -
Ma Junfeng,
Yu Zhiqiang,
Zhang Dahai,
Fan Jinpeng,
Fu Wenfeng,
Chen Jianhong,
Cai Shan,
Wang Bin
Publication year - 2015
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.13393
Subject(s) - crystallite , monoclinic crystal system , crystallization , photoluminescence , molten salt , solid solution , quenching (fluorescence) , materials science , precipitation , analytical chemistry (journal) , crystallography , coprecipitation , crystal (programming language) , mineralogy , crystal structure , chemistry , inorganic chemistry , metallurgy , fluorescence , physics , optics , optoelectronics , chromatography , meteorology , programming language , organic chemistry , computer science
(Y 1− x Eu x ) 4 Al 2 O 9 solid solution powders can be easily prepared by a simple and convenient method, which effectively combined a molten salt process with a chemical co‐precipitation technique. All the samples were characterized by XRD , SEM , and photoluminescence ( PL ) spectra techniques. The results show that the incorporation of NaCl salt can greatly promote the formation and crystallization of (Y 1− x Eu x ) 4 Al 2 O 9 crystallites, and lower their synthesizing temperature, and that their particle size and morphology strongly rely on x value, which finally dominates their PL properties. The prominent emission intensity of 5 D 0 → 7 F 2 transition rather than 5 D 0 → 7 F 1 indicates doped Eu 3+ cations occupy Y 3+ position in monoclinic Y 4 Al 2 O 9 , which is sensitive to Eu 3+ local environment, and at x = 0.10, there exist a maximum PL intensity due to the concentration quenching effect.