Investigation of a hamiltonian with two sources of anisotropy: The dzyaloshinskii-moriya and single-size interactions
La{sub 2}CuO{sub 4} is an S = 1/2 system with almost tetragonal symmetry so that there is no single site interaction term giving rise to anisotropy and the magnetic anisotropy of the system can be explained in terms of the Dzyaloshinskii-Moriya interaction. The Dzyaloshinskii-Moriya interaction can lead to weak ferromagnetism even in a system with predominantly antiferromagnetic interactions. However the closely related compounds, La{sub 2}NiO{sub 4} and La{sub 2}CoO{sub 4} are S = 1 and S = 3/2 systems respectively so that a single-site interaction term is present and it is of interest to see how this interaction changes the magnetic properties of these compounds. Here the classical magnetic ground states are calculated for model Hamiltonians, appropriate to the different low temperature structural phases of the compounds, containing both interactions. 15 refs., 3 figs.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5751330
- Report Number(s):
- LA-UR-91-1275; CONF-910608-2; ON: DE91011381
- Resource Relation:
- Journal Volume: 70; Journal Issue: 10; Conference: 5. joint magnetism and magnetic materials (MMM/INTERMAG) conference, Pittsburgh, PA (USA), 18-21 Jun 1991
- Country of Publication:
- United States
- Language:
- English
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