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|Title:||High-field multifrequency ESR in the S=52 kagome-lattice antiferromagnet KFe 3(OH) 6(SO 4) 2|
D. G. Nocera
Y. S. Lee
The Dow Chemical Company
Massachusetts Institute of Technology
Osaka Prefecture University
Institute for Materials Research, Tohoku University
University of Tsukuba
|Keywords:||Materials Science;Physics and Astronomy|
|Citation:||Physical Review B - Condensed Matter and Materials Physics. Vol.85, No.9 (2012)|
|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. © 2012 American Physical Society.|
|Appears in Collections:||Scopus 2011-2015|
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