Synthesis and characterization of single crystals of the spin-1/2 kagome-lattice antiferromagnets Zn[subscript x]Cu[subscript 4-x](OH)[subscript 6]Cl[subscript 2]
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Synthesis and characterization of single crystals of the spin-1/2 kagome-lattice antiferromagnets ZnxCu4-x(OH)6Cl2
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The Zn-paratacamite family, ZnxCu4-x(OH)6Cl2 for x [greater than or equal to]0.33, is an ideal system for studying spin-1/2 frustrated magnetism in the form of antiferromagnetic Cu2+ kagome planes. Here we report a new synthesis method by which high-quality millimeter-sized single crystals of Zn-paratacamite have been produced. These crystals have been characterized by metal analysis, x-ray diffraction, neutron diffraction, and thermodynamic measurements. The x=1 member of the series displays a magnetic susceptibility that is slightly anisotropic at high temperatures with χc>χab. Neutron and synchrotron x-ray diffraction experiments confirm the quality of these x=1 single crystals and indicate no obvious structural transition down to temperatures of T=2 K.
Date issued
2011-03Department
Massachusetts Institute of Technology. Department of Chemistry; Massachusetts Institute of Technology. Department of Materials Science and Engineering; Massachusetts Institute of Technology. Department of PhysicsJournal
Physical Review B
Publisher
American Physical Society
Citation
Han, T. et al. “Synthesis and characterization of single crystals of the spin-1/2 kagome-lattice antiferromagnets Zn_{x}Cu_{4-x}(OH)_{6}Cl_{2}.” Physical Review B 83 (2011). ©2011 American Physical Society.
Version: Final published version