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Magnetic coupling in the weac ferromagnet CuF2

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CuF2 is known to be an antiferromagnetic compound with a weak ferromagnetism due to the anisotropy of its monoclinic unit cell (Dzialoshinsky-Moriya mechanism). We investigate the magnetic ordering of this compound by means of ab initio periodic unrestricted Hartree-Fock calculations and by cluster calculations which employ state-of-the-art configuration interaction expansions and modern density functional theory techniques. The combined use of periodic and cluster models permits us to firmly establish that the antiferromagnetic order arises from the coupling of one-dimensional subunits which themselves exhibit a very small ferromagnetic coupling between Cu neighbor cations. This magnetic order could be anticipated from the close correspondence between CuF2 and rutile crystal structures.

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REINHARDT, P., HABAS, M. p., DOVESI, R., MOREIRA, Ibério de pinho ribeiro, ILLAS I RIERA, Francesc. Magnetic coupling in the weac ferromagnet CuF2. _Physical Review B_. 1999. Vol. 59, núm. 2, pàgs. 1016-1023. [consulta: 13 de gener de 2026]. ISSN: 0163-1829. [Disponible a: https://hdl.handle.net/2445/10841]

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