硫化鉄 (FeS) の高温高圧下での2次相転移
2001 年 43 巻 2 号 p. 180-184
詳細
2001 年 43 巻 2 号 p. 180-184
High-pressure and high-temperature behavior of FeS was investigated up to 16 GPa and 750°C . A temperature-induced phase transition was observed at 4.6 GPa. The NiAs type phase was stable above 420°C, and it transformed to its super-structured phase with a hexagonal cell below 420°C in a temperature cooling process. The phase transition could be explained as a second-order transition, based on the analysis of X-ray diffraction intensities from the super-lattice.
