The six over eight type double stage large volume high pressure and high temperature facilities and their applications to new materials syntheses

High-pressure and high-temperature (HPHT) synthesis has play growing importance in exploring new materials. It has the merits of producing many new compounds that otherwise could not be synthesized at ambient conditions. The conventional HPHT facilities are based on so called one stage model reaching pressures up to 10 GPa. It is well understood that the higher synthesis pressure is, the more new compounds will be obtained. Here we introduce a state of the art new type high pressure synthesis facility based on double stage model of the six over eight multi anvils large volume high pressure machine that can reach unprecedented 20 GPa and 2 000 °C. With the six over eight double stage facilities, much more new high pressure compounds are expected.