Ge1Hf1Tc2
Ge1Hf1Tc2 is a semiconducting ternary compound composed of germanium, hafnium, and technetium that exists in a metastable state.
About Ge1Hf1Tc2
Ge1Hf1Tc2 is a complex ternary compound composed of germanium, hafnium, and technetium. As a semiconducting material, it represents a unique intersection of transition metal chemistry and group fourteen elements, offering a distinct electronic profile for specialized investigation.
Due to its position above the thermodynamic hull, this compound is considered metastable, suggesting that its synthesis requires precise conditions. Its existence across multiple reported structures highlights its significance as a subject of interest in exploratory materials science research.
Key Properties
Cross-validated computational properties for Ge1Hf1Tc2, aggregated across 2 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Reported Structures
Lowest-energy structures reported for Ge1Hf1Tc2, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| Immm (No. 71) | orthorhombic | 0.15 | 3.5876 | -24.534 | 0.89 |
| Fm-3m (No. 225) | — | — | — | — | — |
| Imm2 (No. 44) | — | — | — | — | — |
| C2/m (No. 12) | — | — | — | — | — |
| I-4m2 (No. 119) | — | — | — | — | — |
| C2/m (No. 12) | — | — | — | — | — |
| F-43m (No. 216) | — | — | — | — | — |
| Pm (No. 6) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| Immm (No. 71) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
Applications
Where Ge1Hf1Tc2 is used.
Frequently Asked Questions
Common questions about Ge1Hf1Tc2, answered from cross-validated data.
What is Ge1Hf1Tc2?
Ge1Hf1Tc2 is a semiconducting ternary compound composed of germanium, hafnium, and technetium that exists in a metastable state.
What is Ge1Hf1Tc2 used for?
What is the band gap of Ge1Hf1Tc2?
Is Ge1Hf1Tc2 a metal, semiconductor, or insulator?
Is Ge1Hf1Tc2 thermodynamically stable?
What is the crystal structure of Ge1Hf1Tc2?
What is the density of Ge1Hf1Tc2?
How many polymorphs of Ge1Hf1Tc2 are known?
What elements does Ge1Hf1Tc2 contain?
Where does the data for Ge1Hf1Tc2 come from?
How It Compares
As a unique ternary phase, Ge1Hf1Tc2 occupies a niche position in materials science where its semiconducting behavior distinguishes it from more common metallic or insulating alloys found in similar heavy-metal 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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