Structural, optical, and thermodynamic properties of an LiCa₂Mg₂As_3xV_3−3xO₁₂ solid‐solution garnet

Abstract

A series of LiCa 2 Mg 2 As 3x V 3−3x O 12 garnet powders (x = 0, 0.25, 0.50, 0.667, 0.75, and 1) were synthesized using solid-state reaction from mixed precursor powders.A complete solid-solution series was found between the endmembers. Energydispersive spectroscopy confirmed the homogeneity of the synthesized garnets.The compositions reversibly melted between 1000 and 1160 • C and had low sintering temperatures between 650 and 900 • C. Thermal diffusivity, heat capacity, thermal conductivity, density, lattice parameter, thermal expansion, index of refraction, and dispersion were measured from room temperature to 800 • C.

Claddings for YAG single crystal high power fiber lasers

“…Detailed results on the LiCa 2 Mg 2 As x V 3-x O 12 garnets are given elsewhere. 39 LiCa 2 Mg 2 As x V 3-x O 12 melts reacted with YAG at 1150°C, but they could be processed as dense claddings in the solid-state without reaction. The thermal conductivity of LiCa 2 Mg 2 As x V 3-x O 12 was measured to be 1.5 W/mK, which was not promising for high power laser cladding applications.…”