抄録
Recently, it was found that the amorphization of trigonal Se proceeds by the mechanical milling. During the amorphization process a drastic change of the atomic distribution was observed in the 2nd neighbour distance of the crystal. The number of atoms located at the 2nd distance in the crystal was reduced 4 to 0. Since the 2nd nearest neighbour corresponds to the inter-chain molecule correlation in the trigonal Se, it can be concluded that trigonal Se is amorphized by destructing the connection of adjacent chain molecules during the milling process. Therefore, the amorphous Se can be regarded as being built up only of chain molecules. Moreover, it was found that the amorphous Se structurally easily relaxed even below the glass transition temperature and partly crystallized after annealing at 30°C for 3months.
