Abstract
The melt quenching and subsequent controlled crystallization method was used to prepare Yb3+/Ho3+/Tm3+ triple-doped Ca5(PO4)3F glass ceramics (GCs), and the structural, optical property, luminescence and temperature sensitivity characteristics were characterized by structural and spectral analysis. The results show that Ca5(PO4)3F nanoparticles are precipitated in the precursor glass (PG). GC820 sample exhibits Sr−max=1.91% K−1 and Sa−max=0.475‰ K−1 based on thermally coupled emitting state. Meanwhile, according to the non-thermally coupled emitting state, the GC820 specimen displays Sr−max=1.23% K−1 and Sa−max=5.94% K−1. This finding indicates that Ca5(PO4)3F: Yb3+, Ho3+, and Tm3+ GCs are promising materials for optical thermometry.
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