UNiSn
Uranium nickel stannide
UNiSn is a ternary intermetallic compound known for its complex electronic and magnetic properties. It is primarily studied in condensed matter physics for its behavior as a semi-metallic material and its unique phase transitions.
NiSnU
Overview
Key Properties
Cross-validated computational properties for UNiSn, aggregated across 4 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.
0.01 eV
Range across DFT structures
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.
0.000 eV/atom
Best (lowest) across sources
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.
On hull (stable)
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
21
4 databases, 4 space groups
Crystallography
Reported Structures
Lowest-energy structures reported for UNiSn, 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. |
|---|---|---|---|---|---|
| C2/m (No. 12) | monoclinic | 0.00 | 0.0000 | -7.253 | 11.90 |
| Immm (No. 71) | orthorhombic | 0.00 | 0.0729 | -39.124 | 11.88 |
| F-43m (No. 216) | cubic | 0.01 | 0.1287 | -7.124 | 10.53 |
| F-43m (No. 216) | cubic | 0.00 | 0.8270 | -6.426 | 9.25 |
| F-43m (No. 216) | cubic | 0.00 | 1.0838 | -6.169 | 8.18 |
| No. 0 | unknown | — | — | — | 2.03 |
| C2/m (No. 12) | Monoclinic | — | — | — | 11.90 |
| No. 0 | unknown | — | — | — | 0.84 |
| No. 0 | unknown | — | — | — | 2.65 |
| F-43m (No. 216) | — | — | — | — | — |
| F-43m (No. 216) | — | — | — | — | — |
| F-43m (No. 216) | — | — | — | — | — |
Uses
Applications
Where UNiSn is used.
Condensed matter physics researchStudy of heavy fermion systemsInvestigation of magnetic ordering in intermetallic compounds
Reference
Frequently Asked Questions
Common questions about UNiSn, answered from cross-validated data.
What is UNiSn?
UNiSn is a ternary intermetallic compound known for its complex electronic and magnetic properties. It is primarily studied in condensed matter physics for its behavior as a semi-metallic material and its unique phase transitions.
More questions
What is UNiSn used for?
UNiSn is used in condensed matter physics research, study of heavy fermion systems, and investigation of magnetic ordering in intermetallic compounds.
What is the band gap of UNiSn?
UNiSn has a DFT-computed band gap of 0.01 eV across 21 reported structures.
Is UNiSn a metal, semiconductor, or insulator?
With a near-zero band gap it behaves as a (semi)metal.
Is UNiSn thermodynamically stable?
Yes — UNiSn sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
What is the crystal structure of UNiSn?
The lowest-energy reported polymorph of UNiSn is monoclinic symmetry, space group C2/m (No. 12).
What is the density of UNiSn?
The computed density of the ground-state structure of UNiSn is 11.90 g/cm³.
How many polymorphs of UNiSn are known?
21 structures of UNiSn are reported across 4 databases, spanning 4 distinct space groups.
What elements does UNiSn contain?
UNiSn contains Ni, Sn, and U (3 elements).
Where does the data for UNiSn come from?
UNiSn data is cross-referenced from materials_project, cod, mpaloe, jarvis.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- mpaloe — Data from mpaloe.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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