2008 年 18 巻 1 号 p. 3-10
Achieving the extreme pressure and temperature conditions found in the Earth’s inner core has been one of the major experimental challenges. In this article, recent development of ultrahigh-pressure and high-temperature techniques in multimegabar pressures region using a laser heated diamond anvil cell is described. Results from recent experiments about phase relations of silica and iron up to 300 GPa and 2000 K are reviewed.