Mg1Os2W1

Mg1Os2W1 is a metastable, semimetallic ternary compound formed from magnesium, osmium, and tungsten.

MgOsW
Crystal structure of Mg1Os2W1
Ground-state structure · Materials Project
Overview

About Mg1Os2W1

Mg1Os2W1 is a complex ternary inorganic compound composed of magnesium, osmium, and tungsten. It exhibits a near-zero-gap electronic character, placing it in the category of semimetallic materials that often demonstrate unique transport properties due to their limited density of states near the Fermi level.

Despite its structural diversity, with numerous reported configurations, the compound is found above the thermodynamic hull. This suggests that while it can be synthesized under specific conditions, it is inherently metastable and prone to phase separation or transformation into more stable constituent phases.

At a glance

Key Properties

Cross-validated computational properties for Mg1Os2W1, aggregated across 2 databases.

Band Gap

0.04 eV
Range across DFT structures

Energy Above Hull

3.985 eV/atom
Best (lowest) across sources

Stability

Above hull
1 DFT source

Structures

27
2 databases, 17 space groups
Reference

Frequently Asked Questions

Common questions about Mg1Os2W1, answered from cross-validated data.

What is Mg1Os2W1?

Mg1Os2W1 is a metastable, semimetallic ternary compound formed from magnesium, osmium, and tungsten.

More questions
What is the band gap of Mg1Os2W1?
Mg1Os2W1 has a DFT-computed band gap of 0.04 eV across 27 reported structures.
Is Mg1Os2W1 a metal, semiconductor, or insulator?
With a near-zero band gap it behaves as a (semi)metal.
Is Mg1Os2W1 thermodynamically stable?
Mg1Os2W1 has a lowest energy above hull of 3.985 eV/atom (above hull).
How many polymorphs of Mg1Os2W1 are known?
27 structures of Mg1Os2W1 are reported across 2 databases, spanning 17 distinct space groups.
What elements does Mg1Os2W1 contain?
Mg1Os2W1 contains Mg, Os, and W (3 elements).
Where does the data for Mg1Os2W1 come from?
Mg1Os2W1 data is cross-referenced from latticegraph.
Comparison

How It Compares

As a unique ternary phase, Mg1Os2W1 represents a specialized point in the compositional space of magnesium-osmium-tungsten systems. Without direct structural siblings in this specific class, it serves as a critical case study in how heavy transition metals like osmium and tungsten interact with alkaline earth metals to form complex, albeit metastable, electronic structures.

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

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