SrF2

strontium fluoride · strontian fluorite

Strontium fluoride is a stable, transparent insulating material primarily used for its specialized optical properties in advanced manufacturing.

FSr
Crystal structure of SrF2
Ground-state structure · Materials Project
Overview

About strontium fluoride

Strontium fluoride is a thermodynamically stable inorganic compound that exhibits characteristic wide-band-gap insulating behavior. Its structural integrity and chemical robustness make it a reliable material for high-performance applications requiring specific dielectric or optical properties.

Due to its favorable electronic structure and stability, this compound is widely utilized in the production of optical components, including high-quality lenses and windows. It serves as a critical material in thin-film deposition processes where transparency across a broad spectrum is essential.

At a glance

Key Properties

Cross-validated computational properties for strontium fluoride, aggregated across 3 databases.

Band Gap

5.94–7.01 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
2 DFT sources

Structures

89
3 databases, 19 space groups
Uses

Applications

Where strontium fluoride is used.

optical coatingsspecialized glass manufacturingscintillation detectorslaser materials
Reference

Frequently Asked Questions

Common questions about strontium fluoride, answered from cross-validated data.

What is SrF2?

Strontium fluoride is a stable, transparent insulating material primarily used for its specialized optical properties in advanced manufacturing.

More questions
What is SrF2 used for?
strontium fluoride (SrF2) is used in optical coatings, specialized glass manufacturing, scintillation detectors, and laser materials.
What is the band gap of SrF2?
strontium fluoride (SrF2) has a DFT-computed band gap of 5.94–7.01 eV across 89 reported structures.
Is SrF2 a metal, semiconductor, or insulator?
With a wide band gap up to 7.01 eV it is an insulator / wide-band-gap material.
Is SrF2 thermodynamically stable?
Yes — strontium fluoride (SrF2) sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of SrF2 are known?
89 structures of SrF2 are reported across 3 databases, spanning 19 distinct space groups.
What elements does SrF2 contain?
strontium fluoride (SrF2) contains F and Sr (2 elements).
Where does the data for SrF2 come from?
SrF2 data is cross-referenced from latticegraph.
Comparison

How It Compares

As a prominent fluoride compound, strontium fluoride represents a foundational material in its chemical class, often serving as a benchmark for stability and optical performance compared to other alkaline earth metal halides.

Data sources & attribution
  • latticegraph — Lattice Graph Materials Intelligence Platform

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