KPO4
KPO4 is a semimetallic inorganic compound consisting of potassium, phosphorus, and oxygen that exhibits metastable thermodynamic characteristics.

About KPO4
KPO4 is a complex inorganic compound composed of potassium, phosphorus, and oxygen. It exhibits a semimetallic electronic character, placing it in a unique position regarding its electrical conductivity compared to typical insulating phosphates.
Due to its position above the thermodynamic hull, this material is considered metastable or unstable under standard conditions. Despite this, it remains a subject of interest in structural chemistry, with multiple distinct arrangements reported across various databases.
Key Properties
Cross-validated computational properties for KPO4, aggregated across 4 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Frequently Asked Questions
Common questions about KPO4, answered from cross-validated data.
What is KPO4?
KPO4 is a semimetallic inorganic compound consisting of potassium, phosphorus, and oxygen that exhibits metastable thermodynamic characteristics.
What is the band gap of KPO4?
Is KPO4 a metal, semiconductor, or insulator?
Is KPO4 thermodynamically stable?
How many polymorphs of KPO4 are known?
What elements does KPO4 contain?
Where does the data for KPO4 come from?
How It Compares
As a unique entry in this chemical space, KPO4 represents a challenging case of structural diversity where the combination of alkali metals and phosphate groups leads to unconventional electronic behavior.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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