The ACerS-NIST PHASE product is the largest collection of data on compositions, phase structure and phase transition temperatures for inorganic materials. Other phase equilibria collections may have some inorganic compounds, but their focus is on other material types such as metals and alloys, or organic systems. Gathered from critically-evaluated literature sources going back to 1898, PHASE covers a wide range of compositions, including but not limited to:
- Oxide systems and mixed systems with oxides for electrodes, catalysts, electroceramics, magneto-resistors, thermistors, capacitors, nuclear fuel/waste, ion conductors and more
- Chalcogenides such as sulfides and selenides for thermoelectrics, optoelectronics, photovoltaics, etc.
- Pnictide systems such as nitrides and arsenides for optical materials, sensors, detectors, photovoltaics, etc.
- Actinide and Rare Earth systems containing U, Th, Pu, Ce, Eu, Gd for nuclear materials research and luminescence, etc.
- Oxy-cation systems such as molybdates and vanadates
- Semiconductors - Si, Ge, Sn
- Group 3 systems - B, Al, Ga, In, Tl
- Group 4 systems - carbides, silicides for high temperature systems
- Glass systems - silicates, borosilicates
- Salts and minerals