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Fabrication and microstructure characterizations of transparent Er:CaF 2 composite ceramic
Author(s) -
Liu Zuodong,
Jia Mengying,
Yi Guoqiang,
Mei Bingchu,
Jing Qiangshan,
Liu Peng
Publication year - 2019
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.15902
Subject(s) - materials science , ceramic , microstructure , sintering , composite number , scanning electron microscope , composite material , hot pressing , transparent ceramics , transmittance , fabrication , doping , optoelectronics , medicine , alternative medicine , pathology
A novel layered transparent Er:CaF 2 composite ceramic was proposed in the present study. Er:CaF 2 nanoparticles were synthesized by a chemical coprecipitation method. The crystal structures and morphologies of synthesized nanoparticles were performed by X‐ray diffraction ( XRD ) and field emission scanning electron microscope ( FE ‐ SEM ) measurements, respectively. Transparent composite ceramic was fabricated by the combination of multistep dry pressing and hot‐pressed sintering method without any sintering aids or binders. The average grain size of 2% Er‐doped and 5% Er‐doped layers were about 30 and 55 μm, respectively. The thickness of interfacial between two different Er‐doped layers was 150‐200 μm. For a 1.5 mm thickness transparent Er:CaF 2 composite ceramic, the optical transmittance reached 44.9% at 500 nm and 53.6% at 1200 nm. The luminescence spectra and thermal conductivities of transparent ceramic specimens were also discussed.