Hf2Mn1Tc1

Hf2Mn1Tc1 is a semimetallic ternary intermetallic compound composed of hafnium, manganese, and technetium.

HfMnTc
Crystal structure of Hf2Mn1Tc1 (orthorhombic, Immm (No. 71))
Ground-state structure · Materials Project
Overview

About Hf2Mn1Tc1

Hf2Mn1Tc1 is a complex ternary intermetallic compound composed of hafnium, manganese, and technetium. Its electronic structure exhibits near-zero-gap characteristics, placing it in the category of semimetallic materials that bridge the gap between conductors and semiconductors.

As a material that sits above the thermodynamic hull, Hf2Mn1Tc1 is considered metastable, which makes it a subject of significant interest for computational materials science. Its structural diversity is highlighted by numerous reported configurations, providing researchers with a broad landscape to investigate how these specific transition metals interact at the atomic scale.

At a glance

Key Properties

Cross-validated computational properties for Hf2Mn1Tc1, aggregated across 2 databases.

Band Gap

0.04 eV
Range across DFT structures

Energy Above Hull

3.923 eV/atom
Best (lowest) across sources

Stability

Above hull
1 DFT source

Structures

26
2 databases, 14 space groups
Crystallography

Reported Structures

Lowest-energy structures reported for Hf2Mn1Tc1, ranked by energy above hull.

Space GroupCrystal SystemBand Gap (eV)E above hull (eV/atom)E/atom (eV)Density (g/cm³)
Immm (No. 71)orthorhombic0.043.9227-29.1571.01
P4/mmm (No. 123)
I-4m2 (No. 119)
Fm-3m (No. 225)
P4mm (No. 99)
Immm (No. 71)
Immm (No. 71)
Cmmm (No. 65)
Imm2 (No. 44)
R-3m (No. 166)
P4/mmm (No. 123)
P2/m (No. 10)
Reference

Frequently Asked Questions

Common questions about Hf2Mn1Tc1, answered from cross-validated data.

What is Hf2Mn1Tc1?

Hf2Mn1Tc1 is a semimetallic ternary intermetallic compound composed of hafnium, manganese, and technetium.

More questions
What is the band gap of Hf2Mn1Tc1?
Hf2Mn1Tc1 has a DFT-computed band gap of 0.04 eV across 26 reported structures.
Is Hf2Mn1Tc1 a metal, semiconductor, or insulator?
With a near-zero band gap it behaves as a (semi)metal.
Is Hf2Mn1Tc1 thermodynamically stable?
Hf2Mn1Tc1 has a lowest energy above hull of 3.923 eV/atom (above hull).
What is the crystal structure of Hf2Mn1Tc1?
The lowest-energy reported polymorph of Hf2Mn1Tc1 is orthorhombic symmetry, space group Immm (No. 71).
What is the density of Hf2Mn1Tc1?
The computed density of the ground-state structure of Hf2Mn1Tc1 is 1.01 g/cm³.
How many polymorphs of Hf2Mn1Tc1 are known?
26 structures of Hf2Mn1Tc1 are reported across 2 databases, spanning 14 distinct space groups.
What elements does Hf2Mn1Tc1 contain?
Hf2Mn1Tc1 contains Hf, Mn, and Tc (3 elements).
Where does the data for Hf2Mn1Tc1 come from?
Hf2Mn1Tc1 data is cross-referenced from materials_project, aflow.
Comparison

How It Compares

As a unique ternary phase, Hf2Mn1Tc1 represents a specialized case within the broader family of hafnium-based transition metal alloys, serving as a distinct example of how technetium integration alters the electronic landscape of these metallic systems.

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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