Iron disilicide

Iron disilicide (FeSi2) is an intermetallic compound, a silicide of iron that occurs in nature as the rare mineral linzhiite. At room temperature it forms orthorhombic crystals (β phase), which convert into a tetragonal α phase upon heating to 970 °C.[3]

Iron disilicide
Names
IUPAC name
Iron disilicide
Other names
Iron(VIII) silicide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.031.507
EC Number
  • 234-671-8
Properties
FeSi2
Molar mass 112.016 g/mol
Appearance gray tetragonal crystals[1]
Density 4.74 g/cm3[1]
Melting point 1,220 °C (2,230 °F; 1,490 K)[1]
Band gap 0.87 eV (ind.)[2]
Electron mobility 1200 cm2/(V·s)
Structure
Orthorhombic[3]
Cmca (No. 64), oS48
a = 0.9863 nm, b = 0.7791 nm, c = 0.7833 nm
16
Hazards
GHS pictograms
GHS Signal word Warning
GHS hazard statements
 H315, H319, H335
Flash point Non-flammable
Related compounds
Other cations
 Cobalt disilicide
Manganese disilicide
Titanium disilicide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N (what is YN ?)
Infobox references

See also

References
  1. Haynes, William M., ed. (2016). CRC Handbook of Chemistry and Physics (97th ed.). CRC Press. p. 4.67. ISBN 9781498754293.
  2. Rizzi, A.; Rösen, B. N. E.; Freundt, D.; Dieker, Ch.; Lüth, H.; Gerthsen, D. (1995). "Heteroepitaxy of β-FeSi2 on Si by gas-source MBE". Physical Review B. 51 (24): 17780–17794. doi:10.1103/PhysRevB.51.17780.
  3. Dusausoy, Y.; Protas, J.; Wandji, R.; Roques, B. (1971). "Structure cristalline du disiliciure de fer, FeSi2-β". Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry. 27 (6): 1209–1218. doi:10.1107/S0567740871003765.
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