Preparation of Nd:Y₃Al₅O₁₂ nanocrystals by low temperature glycol route

Abstract

Y 3 Al 5 O 12 , yttrium aluminum garnet (YAG) single crystals are extensively used as host materials for solidstate lasers. The materials in nano sizes are of immense importance due to their fascinating physical and chemical properties. Nanocrystals of Nd doped YAG were synthesized by low temperature glycol route. This method consists of a mixing of nitrates in an aqueous media at reasonably low temperatures. The Nd doping concentration was optimized and kept at 2 mol%. The prepared material was annealed at different temperatures. Single phase Nd:YAG nanocrystals were obtained at 850 °C. The prepared nanocrystals were characterized by XRD, SEM and TEM techniques for the crystalline phase, crystalline size and structure. The crystalline sizes were obtained in the range of ~20-30 nm.

Microwave assisted sol–gel synthesis of tetragonal zirconia nanoparticles

“…Transmission electronic microscopy (TEM) in high-resolution mode is best tool to analyze the morphology and the sizes of the prepared nanoparticles [27][28][29]. Fig.…”

Modification of relaxation dynamics in Tb3+:Y3Al5O12 nanopowders

“…We created our powders using a sol-gel synthesis (method 1 [26]) and a modified sol-gel synthesis with a freeze drying step under vacuum and at temperatures below -20 C to restrict agglomeration (method 2 [27]). Each method leads to slightly different particle morphologies and size distributions.…”

Luminescent Materials Based on Aluminates: A Review

“…Moreover, better homogeneity and composite structures can be achieved. [ 313 ] Powders to be used for ceramic fabrication can be prepared at progressively lower temperatures, as low as 950 °C by methods like decomposition of organic precursors, [ 314 ] 900C by cryochemical synthesis, [ 315 ] 850C by glycol route, [ 316 ] or even 500C using a green chemistry method [ 317 ] that combines the advantages of a mechanically assisted metathesis reaction and the benefits of molten salts as reaction media. Various methods for ceramic fabrication of YAG and the problems involved are summed up by several authors.…”