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Processing of Ceramics


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Schematic illustration of (a) removing pores from polycrystalline ceramics by hot isostatic press. (b) Typical transmittance spectrum by Mie and Rayleigh scattering.

Photos depict (a) TEM image of Y3Al5O12(YAG) ceramics including excess SiO2 near grain boundary, (b) transmission microscopy image of YAG ceramics under open nicol, and (c) transmission polarizing microscope image of YAG ceramics. Schematic illustration of transmission spectra of Nd:YAG single crystal and polycrystalline ceramics with same Nd content and thickness between 400 and 1200 nm wavelength. Schematic illustrations of (a) Fracture surface of Nd:YAG ceramics by SEM and (b) lattice structure of Nd:YAG ceramics around grain boundary by high-resolution transmission electron microscopy. Schematic illustrations of (a) the setup of laser tomography with 1 mu m light source, (b) sample with grain boundary phase, and (c) sample with no including anisotropic phase measured by tomography.