Lithium holmium fluoride

In chemistry, lithium holmium fluoride is a ternary salt with chemical formula LiHoF4. At temperatures below 1.53 K, it is ferromagnetic described by the Ising model, but the interaction coefficients arise through superexchange.[1][2] Above that temperature, it paramagnetizes.[2] Even at 0 K, LiHoF4 exhibits a quantum phase transition, aligning with an external magnetic field.[3]

Lithium holmium fluoride
Identifiers
3D model (JSmol)
  • InChI=1S/4FH.Ho.Li/h4*1H;;/q;;;;+3;+1/p-4
    Key: LBURCHZQDITKAP-UHFFFAOYSA-J
  • [Li+].[Ho+3].[F-].[F-].[F-].[F-]
Properties
F4HoLi
Molar mass 247.86 g·mol−1
Related compounds
Other cations
 Yttrium lithium fluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

References
  1. Cooke, A. H.; Jones, D. A.; Silva, J. F. A.; Wells, M. R. (8 August 1975). "Ferromagnetism in lithium holmium fluoride—LiHoF4: I. Magnetic measurements". J. Phys. C: Solid State Phys. Great Britain. 8: 4083–4088.
  2. Nikkel, James Algot (August 2003). Phonon studies of LiYxHoxF4 compounds at low temperatures (PhD thesis). Kent State – via ProQuest.
  3. Sachdev, Subir (April 1999). "Quantum phase transitions". Phys. World. 12 (4): 33.

Further reading
  • Twengström, M.; Bovo, L.; Petrenko, O. A.; Bramwell, S. T.; Henelius, P. (19 October 2020). "LiHoF 4 : Cuboidal demagnetizing factor in an Ising ferromagnet". Physical Review B. 102 (14). doi:10.1103/PhysRevB.102.144426.


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