High-field multifrequency ESR in the S=5/2 kagome-lattice antiferromagnet KFe3(OH)(6)(SO4)(2)

Article

关键词: JAROSITES;    MAGNETIZATION;    FRUSTRATION;    PLANE;    MODEL;    SPIN;   

DOI  :  10.1103/PhysRevB.85.094409

来源: SCIE

【 摘 要 】

We have performed high-field multifrequency electron spin resonance (ESR) and high-field magnetization measurements in magnetic fields H of up to 53 T on single crystals of the kagome-lattice antiferromagnet KFe3(OH)(6)(SO4)(2). We have analyzed the magnetization curve and the ESR excitation modes for H parallel to c by using two kinds of anisotropy origins, the Dzyaloshinsky-Moriya (DM) interactions and the single-ion anisotropy, the former of which is inevitable in a kagome-lattice antiferromagnet. We obtained good agreement between experiment and calculation for the case of the DM interactions. In addition, we have clarified the origin of a field-induced metamagnetic transition observed in the magnetization curve and determined the intraplane and interplane exchanges and the DM interaction parameters.

【 授权许可】

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