GeSb4Te7
This material is a complex chalcogenide compound often studied for its phase-change properties. It is primarily utilized in the development of advanced memory devices and optical storage technologies due to its ability to transition between structural states.
Key Properties
Cross-validated computational properties for GeSb4Te7, aggregated across 3 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 GeSb4Te7, 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. |
|---|---|---|---|---|---|
| P-3m1 (No. 164) | trigonal | 0.27 | 0.0038 | -3.961 | 6.15 |
| P-3m1 (No. 164) | Trigonal | — | — | — | 6.13 |
| P-3m1 (No. 164) | Trigonal | — | — | — | 6.27 |
| P-3m1 (No. 164) | Trigonal | — | — | — | 6.22 |
| P-3m1 (No. 164) | — | — | — | — | — |
Applications
Where GeSb4Te7 is used.
Frequently Asked Questions
Common questions about GeSb4Te7, answered from cross-validated data.
What is GeSb4Te7?
This material is a complex chalcogenide compound often studied for its phase-change properties. It is primarily utilized in the development of advanced memory devices and optical storage technologies due to its ability to transition between structural states.
What is GeSb4Te7 used for?
What is the band gap of GeSb4Te7?
Is GeSb4Te7 a metal, semiconductor, or insulator?
Is GeSb4Te7 thermodynamically stable?
What is the crystal structure of GeSb4Te7?
What is the density of GeSb4Te7?
How many polymorphs of GeSb4Te7 are known?
What elements does GeSb4Te7 contain?
Where does the data for GeSb4Te7 come from?
Related Compounds
Other Phase-Change Memory Materials in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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