Transparent YAG nanoceramics composed of nanosized grains were fabricated by high pressure low temperature sintering technique. Absorption and luminescence spectra were measured. It was fount that the emission properties of Nd³⁺ ions in YAG nanoceramic was different than in single crystal. An increase of the applied pressure during sintering cause some special effects like broadening of full-wide at haft maximum of emission lines and decrease of luminescence lifetimes. XRD analysis indicate presence of microstrain in nanoceramics and no significant grain growth during sintering process. Influence of microstrains on luminescence properties of rare-earth ions was analysed.

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168. Microwave Driven Hydrothermal Synthesis of Iron Oxide Nanopowders
169. Indentation Technique for Determination if Mechanical Behavior of Nanomaterials (Bulk and Coatings)