K2ErF5
K2ErF5 is a stable, insulating fluoride compound composed of potassium, erbium, and fluorine.

About K2ErF5
K2ErF5 is a complex fluoride compound characterized by its wide-band-gap insulating electronic nature. As a thermodynamically stable phase residing on the convex hull, it represents a robust crystalline structure within the broader family of rare-earth alkali metal fluorides.
The compound is primarily of interest for its structural integrity and potential utility in optical materials. Its stability makes it a reliable candidate for research into advanced luminescent materials and specialized solid-state devices where insulating properties are required.
Key Properties
Cross-validated computational properties for K2ErF5, aggregated across 3 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.
Applications
Where K2ErF5 is used.
Frequently Asked Questions
Common questions about K2ErF5, answered from cross-validated data.
What is K2ErF5?
K2ErF5 is a stable, insulating fluoride compound composed of potassium, erbium, and fluorine.
What is K2ErF5 used for?
What is the band gap of K2ErF5?
Is K2ErF5 a metal, semiconductor, or insulator?
Is K2ErF5 thermodynamically stable?
How many polymorphs of K2ErF5 are known?
What elements does K2ErF5 contain?
Where does the data for K2ErF5 come from?
How It Compares
As a standalone entry in this context, K2ErF5 serves as a representative example of stable, insulating rare-earth fluoride frameworks, providing a baseline for understanding the structural diversity of alkali-lanthanide systems.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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