Preparative Solid-State Chemistry with High-Power CO_2 Lasers

摘要

The establishment of solid state chemistry as an independent field, which also has had a stimulating effect on material sciences, is a consequence of the experimental skill of chemists. The development of new methods led to an abundance of new compounds, the characteristic properties of which are linked with the solid state. The reaction temperature plays an important role in the synthesis of solid compounds: therefore, it is not surprising that a large number of the newly developed experimental techniques involve methods which can produce high temperatures on the open-ended temperature scale. Since the development of the CO_2 laser, the solid-state chemist has an excellent heat source available, and with the power available today the range of hightemperatures possible has been extended considerably. A way is now open for producing metastable, "entropy-supported" high-temperature compounds and substances with anomalous oxidation states and with macroscopic defects.