Production of Nanosized YAG Powders with Spherical Morphology and Nonaggregation via a Solvothermal Method

Abstract

Monodispersed nanosized yttrium aluminum garnet (YAG) powder was synthesized via a mixed‐solvent thermal method using stoichiometric amounts of inorganic aluminum and yttrium salts. Pure‐phase YAG crystalline powder was obtained at low temperature (290°C) and low pressure (10 MPa). The resulting products were characterized by X‐ray powder diffraction (XRD), infrared, and transmission electron microscopy (TEM). XRD results showed that single‐phase YAG could be formed directly from an amorphous precursor at 280°C and become fully developed at 290°C. TEM images showed that the YAG powder particles in the study were basically spherical in shape and well‐dispersed with a mean grain size of about 60 nm.

Yttrium aluminum garnet nanoparticles synthesized by nitrate decomposition and their low temperature densification behavior

“…However, no well controlled YAG morphology has been reported yet. Other wet-chemical methods for the synthesis of YAG, such as the solvothermal [8,9] and supercritical water synthesis methods [10][11][12], have been successfully used for the synthesis of nanopowders. However, these particles usually have a perfect crystal surface, and thus low sintering activity.…”

Application of urea precipitation method in preparation of advanced ceramic powders

“…Inoue [44], Xia Li [45], Zhang [46], Li [47], Rai [48] etc. prepared ultrafine YAG powders with regular morphology using that method.…”

Co-precipitation Synthesis and Spectroscopic Studies of YAG and Yb:YAG Nanopowder for Opto-Electronic Applications

“…YAG powders was traditionally produced via solid state reaction [10] by milling the component oxides under repeated mechanical mixing and require extensive heat (\1400°C) to eliminate the intermediate phases of YAG. To overcome this various methods like co-precipitation [11][12][13][14][15], Hydrothermal synthesis [16,17], sol-gel process [18,19], Spray pyrolysis [20,21] and Combustion synthesis [22,23] was adopted. It is recognized that wet chemical processing of multi-cation oxides provides considerable advantages like molecular level mixing; less effort more powder yield and excellent homogeneity of the final product [24].…”