Cr1Ge1Tc2
Cr1Ge1Tc2 is a semiconducting ternary compound consisting of chromium, germanium, and technetium that displays complex structural diversity.
About Cr1Ge1Tc2
Cr1Ge1Tc2 is a complex ternary compound composed of chromium, germanium, and technetium. As a semiconducting material, it exhibits electronic properties that distinguish it from simple metallic alloys, making it a subject of interest for fundamental solid-state research.
Despite its existence in multiple structural configurations, the compound is characterized as being above the thermodynamic hull. This suggests that the material is metastable and requires specific synthesis conditions to be realized, reflecting the intricate bonding nature of its constituent elements.
Key Properties
Cross-validated computational properties for Cr1Ge1Tc2, 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 Cr1Ge1Tc2, 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 | 0.20 | 3.2480 | -17.054 | 0.74 |
| Pmmm (No. 47) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| Cmmm (No. 65) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| Pmm2 (No. 25) | — | — | — | — | — |
| C2/m (No. 12) | — | — | — | — | — |
| Pm (No. 6) | — | — | — | — | — |
| Pmmm (No. 47) | — | — | — | — | — |
| Cm (No. 8) | — | — | — | — | — |
| Fm-3m (No. 225) | — | — | — | — | — |
Frequently Asked Questions
Common questions about Cr1Ge1Tc2, answered from cross-validated data.
What is Cr1Ge1Tc2?
Cr1Ge1Tc2 is a semiconducting ternary compound consisting of chromium, germanium, and technetium that displays complex structural diversity.
What is the band gap of Cr1Ge1Tc2?
Is Cr1Ge1Tc2 a metal, semiconductor, or insulator?
Is Cr1Ge1Tc2 thermodynamically stable?
What is the crystal structure of Cr1Ge1Tc2?
What is the density of Cr1Ge1Tc2?
How many polymorphs of Cr1Ge1Tc2 are known?
What elements does Cr1Ge1Tc2 contain?
Where does the data for Cr1Ge1Tc2 come from?
How It Compares
As a unique ternary phase, Cr1Ge1Tc2 represents a specialized case within the broader landscape of chromium-germanium-technetium systems. While it lacks direct siblings in this specific class, its semiconducting nature and structural complexity highlight the diverse potential for electronic tuning in transition metal-based intermetallics.
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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