Laser synthesis of nanopowders with yttrium aluminum garnet stoichiometry |
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Authors: | V V Osipov V V Lisenkov V V Platonov |
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Affiliation: | 1.Institute of Electrophysics, Ural Branch,Russian Academy of Sciences,Yekaterinburg,Russia |
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Abstract: | A nanopowder of yttria-alumina mixture with the yttrium aluminum garnet (YAG) stoichiometry has been synthesized for the first
time by the laser evaporation method. A high-power CO2 laser with pulse duration above 200 μs, repetition frequency of 500 Hz, and pulse energy of about 1 J provided a high yield
of powder at a rate of 24 g/h. The obtained nanopowder has been used to prepare YAG:Nd3+ ceramics with a cubic structure possessing an optical transmittance of about 77% at a wavelength of 1.06 μm. The successful
synthesis of YAG nanopowder is based on the preliminary numerical simulation of the laser evaporation of a target using a
three-dimensional model. |
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