New approaches to determining physical properties in piston-cylinder high-temperature, high-pressure device

High pressure has a unique effect and significant in basic and applied research in solid state physics. Measurement of physical properties under high pressure is the means of high pressure research. Its major content is how to produce various high pressure devices and measurement techniques so as to apply various measurement principles to the high pressure environment and eliminate or at least greatly dampen the interference which a high temperature and high pressure environment has on measurement so as to prevent measurement loss as well as guarantee the required precision of measurement. The merits of piston cylinder containers are: the structure is simple, the determination of pressure and temperature is accurate, and it is easy to bring measuring leads directly out of the high pressure cavity. Thus, one can efficiently and conveniently measure many kinds of behavior under high temperature and high pressure.