Structure and spectroscopic properties of Tb3+/Sm3+ co-doped oxyfluoride glass ceramics containing LiYF4 nanocrystals

LiYF4-nanocrystal-embedded glass ceramics for upconversion: glass crystallization, optical thermometry and spectral conversion

“…1(a) , it evidences a tetragonal structure belonging to an I 4 1 / a space group. 31 There exist several polyhedral structures involving tetrahedral structures composed of Li + and F − and octahedral structure consisting of Y 3+ and F − .…”

Studies of Sol-Gel Evolution and Distribution of Eu3+ Ions in Glass–Ceramics Containing LaF3 Nanocrystals Depending on Initial Sols Composition

“…The majority of the oxyfluoride nano-glass-ceramics characterized and described in the literature were prepared by the conventional melt-quenching method, followed by heat treatment at a controlled and specified time and temperature [33][34][35][36][37][38][39][40]. However, despite many undoubted advantages, the melt-quenching method has substantial drawbacks related to the risk of the evaporation of more volatile compounds during glass melting at temperatures exceeding 1000 • C. In fact, these melting conditions cause actual losses of fluorides, limiting the amounts of the crystal phase in fabricated glass-ceramic materials [9].…”