Existence of a tricritical point in the antiferromagnet KFe3(OH)6(SO4)2 on a kagome lattice
Abstract
We study the phase diagram in the H -T plane of the potassium jarosite compound KFe3(OH)6(SO4)2 for the antiferromagnetic X Y model with Dzyaloshinskii-Moriya (DM) interaction using the mean-field theory for different values of DM. In our approach, we obtain the tricritical point in the H -T plane and the adjustment has a strong correlation with experimental data.
- Publication:
-
Physical Review E
- Pub Date:
- January 2015
- DOI:
- 10.1103/PhysRevE.91.012117
- Bibcode:
- 2015PhRvE..91a2117F
- Keywords:
-
- 05.70.-a;
- 75.10.Hk;
- Thermodynamics;
- Classical spin models