CRYSTALLIZATION MECHANISM OF DEHYDRATED AMORPHOUS LIBO2

The formation of amorphous ${\mathrm{LiBO}}_{2}$, as well as its particle size and phase-transition mechanism, have been investigated by means of thermal analysis, transmission electronic microscopy (TEM), and high-temperature and normal-temperature x-ray-diffraction analyses. \ensuremath{\zeta}, \ensuremath{\eta}, and \ensuremath{\theta} phases of ${\mathrm{LiBO}}_{2}$ have been observed in the crystallization process of the dehydrated amorphous ${\mathrm{LiBO}}_{2}$, which cannot be observed during the crystallization process of glassy ${\mathrm{LiBO}}_{2}$. Unlike noncrystalline glass, the crystallization process of the dehydrated amorphite is dependent on the dehydration conditions. This can act as an approach to synthesize new materials.