The crystallization of amorphous LiBO2 and its phase transition have been investigated by the X-ray diffraction, thermal analysis and infrared absorption spectrum. As the amorphous LiBO2 crystallizes, the metastable p...The crystallization of amorphous LiBO2 and its phase transition have been investigated by the X-ray diffraction, thermal analysis and infrared absorption spectrum. As the amorphous LiBO2 crystallizes, the metastable phase δ-LiBO2 is formed first. The boron-oxygen group in crystal of the δ-phase is similar to that in amorphous LiBO2. As the temperature rises, the δ-phase transforms to the γ-phase, which cannot be prepared at ordinary pressure, and then the γ-phase transforms to the α-phase. Structural relaxation takes place before crystallization. At an equal rising rate of temperature, the larger the particle size of amorphous LiBO2 is, the higher the crystallization temperature will be.展开更多
基金Project supported by the National Natural Science Foundation of China
文摘The crystallization of amorphous LiBO2 and its phase transition have been investigated by the X-ray diffraction, thermal analysis and infrared absorption spectrum. As the amorphous LiBO2 crystallizes, the metastable phase δ-LiBO2 is formed first. The boron-oxygen group in crystal of the δ-phase is similar to that in amorphous LiBO2. As the temperature rises, the δ-phase transforms to the γ-phase, which cannot be prepared at ordinary pressure, and then the γ-phase transforms to the α-phase. Structural relaxation takes place before crystallization. At an equal rising rate of temperature, the larger the particle size of amorphous LiBO2 is, the higher the crystallization temperature will be.
