Application of Fractals on Microstructure of Neodymium-Doped Yttrium Aluminum (Nd: YAG) Transparent Ceramics
Nd: YAG precursor powders were synthesized by homogeneous precipitation and Nd: YAG transparent ceramics were prepared by vacuum sintering at 1700℃ for 5h. The ceramic materials were characterized by light transmittance, field emission gun-environment scanning microscope. Fractal geometry was used to study the quantitative relationships between light transmittance and fractal dimensions of Nd: YAG transparent ceramics. It was found that the transmittance of Nd: YAG with 1mm in thickness was about 45％ and 58％ in visible and near-infrared region respectively. The microstructures of Nd: YAG transparent ceramics were obvious fractal characteristic and fractal dimensions depart a little from two-dimension. The light transmittance decreased with increasing of fractal dimension and nonlinear fit curve was y=1350-1185x+269x<2> between fractal dimension and light transmittance of Nd: YAG transparent ceramics.
neodymium-doped yttrium aluminum garnet transparent ceramics fractals microstructure rare earths
Lu Bin(陆斌) Wang Fenge(王凤娥) Li Yongda(李永大)
Department of Physics, School of Science, Changchun University of Science and Technology, Changchun General Research Institute for Nonferrous Metals,Beijing 100088, China
国际会议
第五届国际稀土开发与应用研讨会(The Fifth International Conference on Rare Earth Decelopment and Applicatin)
包头
英文
142-145
2007-08-07（万方平台首次上网日期，不代表论文的发表时间）