High-field multifrequency ESR in the S=52 kagome-lattice antiferromagnet KFe 3(OH) 6(SO 4) 2

T. Fujita, H. Yamaguchi, S. Kimura, T. Kashiwagi, M. Hagiwara, K. Matan, D. Grohol, D. G. Nocera, Y. S. Lee

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15 Citations (Scopus)

Abstract

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 KFe 3(OH) 6(SO 4) 2. We have analyzed the magnetization curve and the ESR excitation modes for Hc 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.

Original languageEnglish
Article number094409
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume85
Issue number9
DOIs
Publication statusPublished - 2012 Mar 6

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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