TiTeOs

TiTeOs is a semiconducting ternary compound consisting of titanium, tellurium, and osmium that exhibits multiple structural variations.

OsTeTi
Crystal structure of TiTeOs (cubic, F-43m (No. 216))
Ground-state structure · Materials Project
Overview

About TiTeOs

TiTeOs is a complex ternary compound composed of titanium, tellurium, and osmium. As a semiconducting material, it represents a niche area of inorganic chemistry where transition metals and chalcogens combine into diverse structural arrangements.

Despite the existence of multiple reported structures across various databases, this compound is characterized by its position above the thermodynamic hull. This suggests that it may be inherently unstable under standard conditions, marking it as a subject of interest for fundamental materials research.

At a glance

Key Properties

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

Band Gap

0.42–0.60 eV
Range across DFT structures · ground state: narrow gap

Energy Above Hull

0.247 eV/atom
Best (lowest) across sources

Stability

Unstable
3 DFT sources

Structures

10
3 databases, 3 space groups
Validation

Cross-Source DFT Agreement

How well independent DFT databases agree on the thermodynamics of TiTeOs. Tight agreement means computed properties can be trusted without re-running calculations.

Agreement Score

0.43 / 1.00
Trust tier: low

Hull Spread

0.143 eV
EAH spread across sources

Sources Compared

3
jarvis, materials_project, oqmd

Space Group Consensus

All match
Crystallography

Reported Structures

Lowest-energy structures reported for TiTeOs, ranked by energy above hull.

Space GroupCrystal SystemBand Gap (eV)E above hull (eV/atom)E/atom (eV)Density (g/cm³)
——0.600.2467-0.353—
F-43m (No. 216)cubic0.420.2923-0.326—
F-43m (No. 216)cubic0.440.3896-30.74610.34
——0.000.76830.169—
——0.001.06080.461—
P-1 (No. 2)triclinic———8.71
P-1 (No. 2)triclinic———11.89
P-1 (No. 2)triclinic———9.94
P-1 (No. 2)triclinic———11.92
P-1 (No. 2)triclinic———7.67
C2/m (No. 12)monoclinic———10.49
Reference

Frequently Asked Questions

Common questions about TiTeOs, answered from cross-validated data.

What is TiTeOs?

TiTeOs is a semiconducting ternary compound consisting of titanium, tellurium, and osmium that exhibits multiple structural variations.

More questions
What is the band gap of TiTeOs?
TiTeOs has a DFT-computed band gap of 0.42–0.60 eV across 10 reported structures. Standard DFT underestimates band gaps, so the measured gap is typically larger.
Is TiTeOs a metal, semiconductor, or insulator?
DFT predicts a band gap of up to 0.60 eV (a semiconductor). Measured gaps are typically larger.
Is TiTeOs thermodynamically stable?
TiTeOs has a lowest energy above hull of 0.247 eV/atom (unstable).
What is the crystal structure of TiTeOs?
The reference structure of TiTeOs is cubic symmetry, space group F-43m (No. 216).
How many polymorphs of TiTeOs are known?
10 structures of TiTeOs are reported across 3 databases, spanning 3 distinct space groups.
What elements does TiTeOs contain?
TiTeOs contains Os, Te, and Ti (3 elements).
Where does the data for TiTeOs come from?
TiTeOs data is cross-referenced from oqmd, jarvis, materials_project, mpaloe.
Comparison

How It Compares

As a unique ternary phase, TiTeOs occupies a distinct position in materials science where its electronic properties are defined by the interplay of its three constituent elements. Without direct structural siblings in this specific class, it serves as a primary example of the challenges and opportunities in synthesizing complex, potentially metastable chalcogenide-based systems.

Data sources & attribution
  • oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
  • jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
  • materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
  • mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.

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