Nb2Ti1W1

Nb2Ti1W1 is a semimetallic ternary transition metal compound composed of niobium, titanium, and tungsten.

NbTiW
Crystal structure of Nb2Ti1W1 (orthorhombic, Immm (No. 71))
Ground-state structure · Materials Project
Overview

About Nb2Ti1W1

Nb2Ti1W1 is a complex ternary metallic compound composed of niobium, titanium, and tungsten. It exhibits a near-zero-gap electronic character, placing it in the category of semimetallic materials that often demonstrate unique charge carrier behavior.

Due to its position above the thermodynamic hull, this phase is considered metastable. Its existence across multiple reported structures suggests that while it may be difficult to synthesize in equilibrium conditions, it remains a subject of interest for fundamental studies in transition metal alloys.

At a glance

Key Properties

Cross-validated computational properties for Nb2Ti1W1, aggregated across 2 databases.

Band Gap

0.05 eV
Range across DFT structures

Energy Above Hull

4.538 eV/atom
Best (lowest) across sources

Stability

Above hull
1 DFT source

Structures

26
2 databases, 16 space groups
Crystallography

Reported Structures

Lowest-energy structures reported for Nb2Ti1W1, ranked by energy above hull.

Space GroupCrystal SystemBand Gap (eV)E above hull (eV/atom)E/atom (eV)Density (g/cm³)
Immm (No. 71)orthorhombic0.054.5382-23.9150.88
P4mm (No. 99)
Pmmm (No. 47)
Fm-3m (No. 225)
P4/mmm (No. 123)
I-4m2 (No. 119)
P2/m (No. 10)
Pmm2 (No. 25)
Pmmm (No. 47)
P4/mmm (No. 123)
P4/mmm (No. 123)
C2/m (No. 12)
Reference

Frequently Asked Questions

Common questions about Nb2Ti1W1, answered from cross-validated data.

What is Nb2Ti1W1?

Nb2Ti1W1 is a semimetallic ternary transition metal compound composed of niobium, titanium, and tungsten.

More questions
What is the band gap of Nb2Ti1W1?
Nb2Ti1W1 has a DFT-computed band gap of 0.05 eV across 26 reported structures.
Is Nb2Ti1W1 a metal, semiconductor, or insulator?
With a near-zero band gap it behaves as a (semi)metal.
Is Nb2Ti1W1 thermodynamically stable?
Nb2Ti1W1 has a lowest energy above hull of 4.538 eV/atom (above hull).
What is the crystal structure of Nb2Ti1W1?
The lowest-energy reported polymorph of Nb2Ti1W1 is orthorhombic symmetry, space group Immm (No. 71).
What is the density of Nb2Ti1W1?
The computed density of the ground-state structure of Nb2Ti1W1 is 0.88 g/cm³.
How many polymorphs of Nb2Ti1W1 are known?
26 structures of Nb2Ti1W1 are reported across 2 databases, spanning 16 distinct space groups.
What elements does Nb2Ti1W1 contain?
Nb2Ti1W1 contains Nb, Ti, and W (3 elements).
Where does the data for Nb2Ti1W1 come from?
Nb2Ti1W1 data is cross-referenced from materials_project, aflow.
Comparison

How It Compares

As a ternary transition metal system, Nb2Ti1W1 represents a specialized composition within the broader landscape of refractory metal alloys. Unlike simpler binary systems, this compound highlights the complexity of multi-element interactions where electronic and structural stability are finely balanced.

Data sources & attribution
  • materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
  • aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).

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