| Structure and magnetism of S = 1/2 kagome antiferromagnets NiCu(3)(OH)(6)Cl(2) and CoCu(3)(OH)(6)Cl(2). | |
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MedLine Citation:
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PMID: 23186651 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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We have successfully synthesized S = 1/2 kagome antiferromagnets MCu(3)(OH)(6)Cl(2) (M = Ni and Co) by a hydrothermal method with a rotating pressure vessel. Structural characterization shows that both compounds have similar crystal structure to ZnCu(3)(OH)(6)Cl(2) with [Formula: see text] symmetry. As with ZnCu(3)(OH)(6)Cl(2), the compounds show no obvious hysteresis at 2 K. A spin-glass transition is found in both NiCu(3)(OH)(6)Cl(2) and CoCu(3)(OH)(6)Cl(2) at low temperatures (6.0 and 3.5 K respectively) by AC susceptibility measurements. This indicates no long-range magnetic order and a strong spin frustration. The substitution of Zn(2+) by magnetic ions Ni(2+) or Co(2+) effectively enhances the interlayer exchange coupling and changes the ground state of the kagome spin system. |
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Authors:
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Yue-Sheng Li; Qing-Ming Zhang |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-11-28 |
Journal Detail:
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Title: Journal of physics. Condensed matter : an Institute of Physics journal Volume: 25 ISSN: 1361-648X ISO Abbreviation: J Phys Condens Matter Publication Date: 2012 Nov |
Date Detail:
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Created Date: 2012-11-28 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101165248 Medline TA: J Phys Condens Matter Country: - |
Other Details:
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Languages: ENG Pagination: 026003 Citation Subset: - |
Affiliation:
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Department of Physics, Renmin University of China, Beijing 100872, People's Republic of China. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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