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Exchange interactions in the quasi-linear-chain antiferromagnetKFeS2
1984
Physical Review B (Condensed Matter)
We report magnetic susceptibility measurements on KFeS2 in the temperature range 4.2 & T & 300 K. In addition to a curvature of the susceptibility curve P(T) near 250 K, we also observe a small sharp maximum at 12.5 K characteristic of linear-chain antiferromagnetism in quasi-onedimensional systems. The results were interpreted with use of the molecular-field approximation and the temperature-dependent Green's-function method as well as the refined molecular-field theory for the Heisenberg
doi:10.1103/physrevb.30.5300
fatcat:fjn3izsstfaafmimkoh5hcnnje