| The magnetism of (5MAP)2CuBr4 [5MAP = 5-methyl-2-aminopyridinium]: a quasi-2D or a 3D magnetic system? | |
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MedLine Citation:
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PMID: 20695455 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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In order to determine if its magnetic topology is actually two- or three-dimensional (2D or 3D), the mechanism of the magnetic interaction in (5MAP)(2)CuBr(4), a previously thought quasi-2D antiferromagnet, is re-examined using the first-principles bottom-up methodology. Once the magnitude and sign of all unique magnetic interactions present in the room-temperature (5MAP)(2)CuBr(4) crystal are evaluated, it is found that, even at room temperature, the magnetic topology of the crystal corresponds to a 3D antiferromagnet. Such 3D nature cannot be determined by examination of the magnetic susceptibility curve, chi(T), because it is found that the chi(T) curve computed using this 3D magnetic topology is very similar to that obtained using a 2D model where all interplane interactions have been deleted. However, its 3D magnetic dimensionality can be confirmed by examination of the shape of the magnetization curve, M(H); the computed curve is similar to the experimental one for the 3D case. |
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Authors:
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Joaquim Jornet-Somoza; Mercè Deumal; Christopher P Landee; Mark M Turnbull; Juan J Novoa |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Inorganic chemistry Volume: 49 ISSN: 1520-510X ISO Abbreviation: Inorg Chem Publication Date: 2010 Sep |
Date Detail:
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Created Date: 2010-08-30 Completed Date: 2010-12-14 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0366543 Medline TA: Inorg Chem Country: United States |
Other Details:
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Languages: eng Pagination: 8017-24 Citation Subset: - |
Affiliation:
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Departament de Química Física and IQTCUB, Facultat de Química, Universitat de Barcelona, 08028-Barcelona, Spain. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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