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RESEARCH PRODUCT
Alternating antiferromagnetic and ferromagnetic exchange interactions in the S = 1 Heisenberg chain. Theory and magnetic properties
Eugenio CoronadoJuan J. Borrás-almenarFrancesc LloretJuan M. Clemente-juansubject
NickelChain structurechemistryFerromagnetismMagnetic domainCondensed matter physicsHeisenberg modelAlternation (geometry)General Physics and Astronomychemistry.chemical_elementAntiferromagnetismCondensed Matter::Strongly Correlated ElectronsPhysical and Theoretical Chemistrydescription
Abstract We focus on the magnetic properties of the S = 1 Heisenberg chain with alternating antiferromagnetic and ferromagnetic exchange interactions J 1 and J 2 . The magnetic behavior of this system is calculated as a function of the alternation parameter α = J 2 /| J 1 |, from a general numerical procedure based on closed spin chains of increasing length. These theoretical results are fitted to rational unified expressions, which are subsequently used to describe the magnetic behavior of a nickel (II) complex, [Ni(bipy)(N 3 ) 2 ] n , exhibiting an alternating chain structure with a dominant ferromagnetic exchange.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-08-01 | Chemical Physics Letters |