ErIn
ErIn is a stable, metallic intermetallic compound formed from erbium and indium.
About ErIn
ErIn is a metallic intermetallic compound composed of erbium and indium. As a thermodynamically stable phase located on the convex hull, it represents a robust structural arrangement of these two elements, making it a subject of interest in fundamental materials science studies.
Its metallic nature suggests high electrical conductivity, which is characteristic of this class of binary intermetallics. With multiple reported structures across various databases, it serves as a valuable reference point for understanding rare-earth indium alloy systems.
Key Properties
Cross-validated computational properties for ErIn, aggregated across 5 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of ErIn. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for ErIn, 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. |
|---|---|---|---|---|---|
| Pm-3m (No. 221) | cubic | 0.00 | 0.0000 | -28.805 | 9.16 |
| Pm-3m (No. 221) | — | — | — | — | — |
| — | — | — | — | — | 9.04 |
| Pm-3m (No. 221) | Cubic | — | — | — | 9.01 |
| Pm-3m (No. 221) | Cubic | — | — | — | 9.01 |
| Pm-3m (No. 221) | Cubic | — | — | — | 9.01 |
| No. 0 | unknown | — | — | — | 8.92 |
| P4/mmm (No. 123) | — | — | — | — | — |
| No. 0 | unknown | — | — | — | 4.96 |
Applications
Where ErIn is used.
Frequently Asked Questions
Common questions about ErIn, answered from cross-validated data.
What is ErIn?
ErIn is a stable, metallic intermetallic compound formed from erbium and indium.
What is ErIn used for?
What is the band gap of ErIn?
Is ErIn a metal, semiconductor, or insulator?
Is ErIn thermodynamically stable?
What is the crystal structure of ErIn?
What is the density of ErIn?
How many polymorphs of ErIn are known?
What elements does ErIn contain?
Where does the data for ErIn come from?
How It Compares
As a binary intermetallic compound, ErIn occupies a distinct position in the landscape of rare-earth indium alloys, serving as a stable building block for exploring the structural diversity and electronic properties inherent to these metallic systems.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- mpaloe — Data from mpaloe.
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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