Abstract
Nanosized chromium disilicide (CrSi 2) powder was prepared by the arc plasma method and a subsequent purification process. The as-prepared CrSi 2 powder was characterized by X-ray powder diffraction and transmission electron microscopy. The crystal structure of the powder was also confirmed with infrared spectroscopy. The thermal stability of powders were investigated from room temperature to 1000°C in air and in a helium atmosphere, indicating that even in the nanosize region this disilicide powder was stable up to 720°C in air. Analysis of its photovoltage spectra shows that there exist two direct interband transitions in nanosized CrSi 2 grains at 0.782 and 1.148 eV, respectively.
Published Version
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