Quasi-two-dimensional antiferromagnet on a triangular lattice RbFe(MoO4)(2)
UNSPECIFIED. (2003) Quasi-two-dimensional antiferromagnet on a triangular lattice RbFe(MoO4)(2). PHYSICAL REVIEW B, 67 (9). -. ISSN 1098-0121Full text not available from this repository.
Official URL: http://dx.doi.org/10.1103/PhysRevB.67.094434
RbFe(MoO4)(2) is a rare example of a nearly two-dimensional Heisenberg antiferromagnet on a triangular lattice. Magnetic resonance spectra and magnetization curves reveal that the system has a layered spin structure with six magnetic sublattices. The sublattices within a layer are arranged in a triangular manner with the magnetization vectors 120degrees apart. The H-T phase diagram, containing at least five different magnetic phases is constructed. In zero field, RbFe(MoO4)(2) undergoes a phase transition at T-N = 3.8 K into a noncollinear triangular spin structure with all the spins confined in the basal plane. The application of an in-plane magnetic field induces a collinear spin state between the fields H-c1 = 47 kOe and H-c2 = 71 kOe and produces a magnetization plateau at one-third of the saturation moment. Both the ESR and the magnetization measurements also clearly indicate an additional first-order phase transition in a field of 35 kOe. The exact nature of this phase transition is uncertain.
|Item Type:||Journal Article|
|Subjects:||Q Science > QC Physics|
|Journal or Publication Title:||PHYSICAL REVIEW B|
|Publisher:||AMERICAN PHYSICAL SOC|
|Official Date:||1 March 2003|
|Number of Pages:||9|
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