The demand for modern materials, especially glasses, used in different applications, such as radiation sensors and spectral converters, requires a detailed study of their properties. incorporation fluoride compounds borate glasses crystallization at the nanometric scale allows properties these materials to be further enhanced. Although many works showed improvements some properties, critical as...

It is known that the optical transparency of an oxide glass decreases with increase in size and fraction crystals during heat-treatment. Here, authors report opposite scenario, where a translucent Er3+−Yb3+ doped oxyfluoride precursor glass-ceramic (P-GC) becomes transparent increasing crystal crystallinity. Specifically, heat-treated P-GC samples, observe growth existing Ba2LaF7 particularly f...

We prepared four Er3+-Yb3+ co-doped oxyfluoride precursor glass (PG) samples with the same chemical composition at different melt-homogenization temperatures (Thomo), respectively, melt-quenching rate. investigated effect of Thomo and heat-treatment (HT) on crystallization, structure, optical properties samples. The results show that structural heterogeneity in PG sample increases lowering Thom...

Abstract Calcium is a vital constituent in multilayered cuprate superconductors with critical temperatures ( T c ) above 100 K, because it plays key role separating CuO 2 planes. Here, we demonstrate the synthesis of calcium-free double-layered cuprates: Sr SrCu O 4 X ,O) = F, Cl, and Br) M (Sr,Ba) y Hg/Re, Tl, B/C), where strontium exists between Oxyfluoride mercury-based materials show 107 K ...