Magnetic exchange interaction in a pair of orbitally degenerate ions: Magnetic anisotropy of [Ti2Cl9]−3
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Magnetic exchange interaction in a pair of orbitally degenerate ions: Magnetic anisotropy of [Ti2Cl9]−3

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Magnetic exchange interaction in a pair of orbitally degenerate ions: Magnetic anisotropy of [Ti2Cl9]−3

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dc.contributor.author Borrás Almenar, Juan José
dc.contributor.author Clemente Juan, Juan Modesto
dc.contributor.author Coronado Miralles, Eugenio
dc.contributor.author Palii, Andrew V.
dc.date.accessioned 2010-06-14T08:19:14Z
dc.date.available 2010-06-14T08:19:14Z
dc.date.issued 2001
dc.identifier.uri http://hdl.handle.net/10550/12956
dc.language.iso en en
dc.relation http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=JCPSA6000114000003001148000001&idtype=cvips&prog=normal&doi=10.1063/1.1329892 en
dc.source BORRÁS ALMENAR, J.J. ; CLEMENTE JUAN, J.M. ; CORONADO, E. ; PALII, A.V. Magnetic exchange interaction in a pair of orbitally degenerate ions: Magnetic anisotropy of [Ti2Cl9]−3. En: Journal of Chemical Physics, 2001, vol. 114, no. 3 en
dc.subject Titanium compounds ; Magnetic anisotropy ; Negative ions ; Exchange interactions (electron) en
dc.title Magnetic exchange interaction in a pair of orbitally degenerate ions: Magnetic anisotropy of [Ti2Cl9]−3 en
dc.type info:eu-repo/semantics/article en
dc.type info:eu-repo/semantics/publishedVersion en
dc.subject.unesco UNESCO::FÍSICA::Química física en
dc.identifier.doi 10.1063/1.1329892 en
dc.description.abstractenglish The theory of the kinetic exchange in a pair of orbitally degenerate ions developed by the authors [J. Phys. Chem. A 102, 200 (1998)] is applied to the case of face-shared bioctahedral dimer (overall D3h-symmetry). The effective kinetic exchange Hamiltonian is found for a 2T2–2T2 system taking into account all relevant transfer pathways and charge-transfer crystal field states. The influence of different transfer integrals involved in the kinetic exchange on the energy pattern and magnetic properties of the system is examined. The role of other related interactions (trigonal crystal field, spin–orbit coupling) is also discussed in detail. Using the pseudoangular momentum representation and the technique of the irreducible tensor operators of R3-group we give a general outlook on the nontrivial symmetry properties of the effective Hamiltonian for the D3h-pair, and on the magnetic anisotropy arising from the orbital interactions specific for the case of orbital degeneracy. The magnetic properties of the binuclear unit [Ti2Cl9]−3 in Cs3Ti2Cl9 are discussed with a special emphasis on the magnetic anisotropy experimentally observed in this system. The existing exchange models for [Ti2Cl9]−3 and the concept of the effective Hamiltonian are discussed in the context of the present study. en
dc.description.private borrasj@uv.es ; clemente@uv.es ; coronado@uv.es ; palii@uv.es en

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