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Determination of the Spin−Lattice Relevant for the Quaternary Magnetic Oxide Bi4Cu3V2O14 on the Basis of Tight-Binding and Density Functional Calculations
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Abstract

The quaternary magnetic oxide Bi4Cu3V2O14 consists of Cu4O8 triple chains made up of corner-sharing CuO4 square planes. To determine its spin−lattice, the spin exchange interactions of Bi4Cu3V2O14 were evaluated by performing a spin dimer analysis based on tight-binding calculations and a mapping analysis based on first principles density functional theory calculations. Both calculations show that the spin−lattice of Bi4Cu3V2O14 is not an antiferromagnetically coupled diamond chain, which results from an idealized view of the structure of the Cu4O8 triple chain and a neglect of super-superexchange interactions. The correct spin−lattice is an antiferromagnetic chain made up of antiferromagnetic linear trimers coupled through their midpoints via super-superexchange interaction, which predicts that Bi4Cu3V2O14 has an antiferromagnetic spin ground state and has no spin frustration, both in agreement with experiment.
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This article has been cited by 13 ACS Journal articles (5 most recent appear below).

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Jamie L. Manson, Saul H. Lapidus, Peter W. Stephens, Peter K. Peterson, Kimberly E. Carreiro, Heather I. Southerland, Tom Lancaster, Stephen J. Blundell, Andrew J. Steele, Paul A. Goddard, Francis L. Pratt, John Singleton, Yoshimitsu Kohama, Ross D. McDonald, Rico E. Del Sesto, Nickolaus A. Smith, Jesper Bendix, Sergei A. Zvyagin, Jinhee Kang, Changhoon Lee, Myung-Hwan Whangbo, Vivien S. Zapf, and Alex PlonczakInorganic Chemistry2011 Article ASAP[Ni(HF2)(pyz)2]X {pyz = pyrazine; X = PF6– (1), SbF6– (2)} were structurally characterized by synchrotron X-ray powder diffraction and found to possess axially compressed NiN4F2 octahedra. At 298 K, 1 is monoclinic (C2/c) with unit cell parameters, a = ...
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History
- Published In Issue June 02, 2008
- Article ASAPMay 03, 2008
- Received: February 1, 2008
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