Ge2Hf2Te8
Ge2Hf2Te8 is a thermodynamically stable semiconducting chalcogenide used in the development of advanced phase-change memory devices.
About Ge2Hf2Te8
Ge2Hf2Te8 is a semiconducting phase-change material characterized by its notable thermodynamic stability on the convex hull. As a complex chalcogenide, it offers a distinct structural framework that enables reversible transitions between amorphous and crystalline states, which is fundamental for high-performance memory applications.
This compound represents a sophisticated evolution in phase-change technology, leveraging its specific elemental composition to achieve reliable switching behavior. Its stable nature makes it a compelling candidate for non-volatile memory architectures that require long-term data retention and efficient energy consumption.
Key Properties
Cross-validated computational properties for Ge2Hf2Te8, 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.
Applications
Where Ge2Hf2Te8 is used.
Frequently Asked Questions
Common questions about Ge2Hf2Te8, answered from cross-validated data.
What is Ge2Hf2Te8?
Ge2Hf2Te8 is a thermodynamically stable semiconducting chalcogenide used in the development of advanced phase-change memory devices.
What is Ge2Hf2Te8 used for?
What is the band gap of Ge2Hf2Te8?
Is Ge2Hf2Te8 a metal, semiconductor, or insulator?
Is Ge2Hf2Te8 thermodynamically stable?
How many polymorphs of Ge2Hf2Te8 are known?
What elements does Ge2Hf2Te8 contain?
Where does the data for Ge2Hf2Te8 come from?
How It Compares
Within the phase-change memory materials class.
Within the landscape of phase-change materials, Ge2Hf2Te8 stands out for its structural stability compared to more traditional binary systems like GeTe. While GeTe remains the foundational benchmark for the class, the inclusion of hafnium in the Ge2Hf2Te8 lattice provides a unique electronic environment that differentiates it from common ternary systems such as Ge2Sb2Te5, offering researchers a distinct pathway for tuning switching kinetics and thermal resilience.
Related Compounds
Other Phase-Change Memory Materials in the database.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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