Can large magnetic anisotropy and high spin really coexist?

11:15 AM–2:15 PM, Monday, March 10, 2008
Morial Convention Center Room: 219

Sponsoring Unit: GMAG
Chair: Stephen Hill, University of Florida

Abstract ID: BAPS.2008.MAR.B27.9

Abstract: B27.00009 : Can large magnetic anisotropy and high spin really coexist?*

1:15 PM–1:27 PM

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Authors:

Claudia Loose
(Institute for theoretical Physics, TU Bergakademie Freiberg, Leipziger Str. 23, D-09599 Freiberg, Germany)

Eliseo Ruiz
(Departament de Quimica Inorganica and Institut de Recerca de Quimica Teorica i Computacional, Universitat de Barcelona, Diagonal 647,08028)

Jordi Cirera
(Departament de Quimica Inorganica and Institut de Recerca de Quimica Teorica i Computacional, Universitat de Barcelona, Diagonal 647,08028)

Joan Cano
(Departament de Quimica Inorganica and Institut de Recerca de Quimica Teorica i Computacional, Universitat de Barcelona, Diagonal 647,08028)

Santiago Alvarez
(Departament de Quimica Inorganica and Institut de Recerca de Quimica Teorica i Computacional, Universitat de Barcelona, Diagonal 647,08028)

Jens Kortus
(Institute for theoretical Physics, TU Bergakademie Freiberg, Leipziger Str. 23, D-09599 Freiberg, Germany)

This theoretical study discusses the interplay of the magnetic anisotropy and magnetic exchange interaction of two Mn$_6$ complexes. Our results for two polynuclear Mn$_6$ complexes show a very strong dependence of the D value on the spin of the ground state while the energy barriers are practically constant. Thus, complex 2 with a large spin (S = 12) favoured by ferromagnetic interactions has a small D value, while the lower spin complex 1 (S = 4) has a large D value. Therefor we suggest, that a large magnetic anisotropy is not favoured by a high spin state of the ground state.\\ E.Ruiz et al. Chem. Comm. 2008, DOI: 10.1039/b714715e

*C.L. and J.K. would like to thank the DAAD and DFG for financial support within the SPP 1137.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2008.MAR.B27.9

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Bulletin of the American Physical Society

2008 APS March Meeting

Volume 53, Number 2

Monday–Friday, March 10–14, 2008; New Orleans, Louisiana

Session B27: Focus Session: Molecular Magnets I

Abstract: B27.00009 : Can large magnetic anisotropy and high spin really coexist?*

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