Preparation of Ce-doped (Y,Gd)3Al5O12 nanoceramics by sintering and crystallization of glass microspheres

Glass‐ceramic Ce3+‐doped YAG‐Al2O3 composites prepared by sintering of glass microspheres

“…However, many quenched glasses, including yttrium aluminate glasses, crystallize rapidly at their crystallization temperatures, T c , when the supplied thermal energy mobilizes the structure and the latent heat previously trapped during quenching is released. The working temperatures of such glasses are therefore restricted to the temperature range between T g and the onset of the crystallization temperature T x (so‐called kinetic or sintering window, Δ T x = T x – T g ) 27–30,35,36 . In the case of yttrium aluminate glasses, this window is very narrow (only 20–40℃ wide) 27–32 .…”

“…The working temperatures of such glasses are therefore restricted to the temperature range between T g and the onset of the crystallization temperature T x (so‐called kinetic or sintering window, Δ T x = T x – T g ) 27–30,35,36 . In the case of yttrium aluminate glasses, this window is very narrow (only 20–40℃ wide) 27–32 . Due to the rapid crystallization of YAG from those glasses the preparation of transparent or translucent bulk glass or ceramic without sintering additives is very difficult and requires careful optimization of sintering conditions 37,38 .…”

“…However, the dimensions of transparent nanoceramics were limited by the diameter of prepared glass beads. Only a few reports have been published on the preparation of nanoceramics by sintering and crystallization of rare‐earth aluminate glass microspheres 28–30 29 whereas translucent Ce‐doped glass‐ceramics was achieved only by the addition of 30–40 mol.% of SiO 2 to Y 2 O 3 –Al 2 O 3 system with YAG composition, as reported by Wang et al 30 …”

In Situ Assembling of Glass Microspheres and Bonding Force Analysis by the Ultraviolet–Near-Infrared Dual-Beam Optical Tweezer System

“…However, strict requirements for the vertical coupling distance and fabrication difficulties limit the applicability of these solutions. Recently developed chemical synthesis techniques have enabled the production of high-quality glass microspheres with controlled sizes, shapes, compositions, and other unique properties. − Functional devices constructed with glass microspheres find broad applications for photonics as ideal microresonator components with either active or passive compositions, − introducing new possibilities for vertical routers in 3D photonic networks.…”

Erosion behavior and luminescence properties of Y3Al5O12:Ce3+‐embedded calcium bismuth borate glass‐ceramics for WLEDs

“…However, the glass crystallization route requires accurate crystallization control and high temperature. Meanwhile, the optical properties of YAG‐PiG materials created via the crystallization approach are worse than those created via the co‐sintering route . Thus, the method of co‐sintering YAG phosphor‐glass mixtures has been broadly adopted.…”