Preparation and Characteristic of Properties of High Transmission Nd:YAG Transparent Ceramic

doi:10.3724/SP.J.1077.2008.01037

Abstract

Abstract: Neodymium-doped yttrium aluminum garnet (Nd:YAG) precursor powders were fabricated by co-precipitation method, using Al(NO₃)₃·9H₂O, Y(NO₃)₃·6H₂O, (NH₄)₂SO₄ and Nd(NO₃)₃ as raw materials, NH₄HCO₃ as precipitator, TEOS as sintering additive. After calcining the Nd:YAG precursor at 1200℃ for 5h, the well dispersive, spherical pure cubic YAG nano-powders with average particle size of about 100nm were obtained. Subsequently, calcined powders were molded by cold isostatic presses. Transparent ceramics of excellent transmission were obtained by sintering Nd:YAG green body at 1700-1800℃ for 10h in vacuum. The ceramic crystal grains with average size of about 15μm appear uniformity. There is no impurity and core in grain interface and inner-grain. No scattering center can be detected. The transmission of the sample with thickness of 1.5mm is 83.5% at the near infrared wavelength of 1064nm, which is very close to the theoretical value of Nd:YAG single crystal.

Key words: co-precipitation, nanopowder, Nd:YAG, transparent ceramic

CLC Number:

TQ174

LIU Wen-Bin,KOU Hua-Min,PAN Yu-Bai,KARAKI Tomoaki,LI Jiang,GUO Jing-Kun. Preparation and Characteristic of Properties of High Transmission Nd:YAG Transparent Ceramic[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2008.01037.

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Preparation and Characteristic of Properties of High Transmission Nd:YAG Transparent Ceramic

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