TmF3

thulium trifluoride · thulium(III) fluoride

Thulium trifluoride is a stable, insulating rare-earth compound frequently used in optical technologies and material science research.

FTm
Crystal structure of TmF3
Ground-state structure · Materials Project
Overview

About thulium trifluoride

Thulium trifluoride is a thermodynamically stable inorganic compound that exists as a wide-gap insulator. Its robust structural profile is confirmed by its presence on the convex hull, indicating significant chemical stability under standard conditions.

This material is primarily utilized for its unique electronic and optical properties inherent to the lanthanide series. It serves as a critical component in the development of specialized glass, fiber optics, and various luminescent materials where high-purity rare-earth fluorides are required.

At a glance

Key Properties

Cross-validated computational properties for thulium trifluoride, aggregated across 3 databases.

Band Gap

5.38–6.17 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
2 DFT sources

Structures

7
3 databases, 3 space groups
Uses

Applications

Where thulium trifluoride is used.

Optical fiber manufacturingLuminescent materialsSpecialized glass productionChemical vapor deposition precursor
Reference

Frequently Asked Questions

Common questions about thulium trifluoride, answered from cross-validated data.

What is TmF3?

Thulium trifluoride is a stable, insulating rare-earth compound frequently used in optical technologies and material science research.

More questions
What is TmF3 used for?
thulium trifluoride (TmF3) is used in optical fiber manufacturing, luminescent materials, specialized glass production, and chemical vapor deposition precursor.
What is the band gap of TmF3?
thulium trifluoride (TmF3) has a DFT-computed band gap of 5.38–6.17 eV across 7 reported structures.
Is TmF3 a metal, semiconductor, or insulator?
With a wide band gap up to 6.17 eV it is an insulator / wide-band-gap material.
Is TmF3 thermodynamically stable?
Yes — thulium trifluoride (TmF3) sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of TmF3 are known?
7 structures of TmF3 are reported across 3 databases, spanning 3 distinct space groups.
What elements does TmF3 contain?
thulium trifluoride (TmF3) contains F and Tm (2 elements).
Where does the data for TmF3 come from?
TmF3 data is cross-referenced from latticegraph.
Comparison

How It Compares

As a member of the rare-earth fluoride family, thulium trifluoride occupies a stable position within the class, exhibiting the characteristic insulating behavior and structural integrity expected of heavy lanthanide trifluorides.

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

Analyze TmF3 in the Lattice Graph platform

Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.

Explore the Platform →