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High‐entropy transparent fluoride laser ceramics
Author(s) -
Chen Xianqiang,
Wu Yiquan
Publication year - 2020
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.16842
Subject(s) - materials science , ceramic , scanning electron microscope , analytical chemistry (journal) , photoluminescence , transparent ceramics , transmittance , lattice constant , mineralogy , grain size , microstructure , optics , diffraction , composite material , optoelectronics , chemistry , physics , chromatography
For the first time, a transparent high‐entropy fluoride laser ceramic has been prepared and characterized. X‐ray diffraction (XRD) analysis of a CeNdCaSrBaF 12 (CNCSBF) transparent ceramic consolidated by vacuum hot pressing (VHP) reveals that Ce 3+ , Nd 3+ , Ca 2+ , Sr 2+ , and Ba 2+ have formed a single‐phased fluorite solid solution, with a lattice constant of 5.826 Å. Bulk density measurements produced a value of 6.15 g/cm 3 . Scanning electron microscopy (SEM) analysis of the ceramic revealed a uniform distribution of grain sizes in the material, with the average grain size being approximately 20 μm. The material exhibits a maximum in‐line transmittance of approximately 60% at 1000 nm. A near‐infrared range photoluminescence (PL) emission band was observed at 1057 nm, with a visible‐range PL emission band being located at 440 nm.