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Slow Magnetic Relaxation in a CoII–YIII Single-Ion Magnet with Positive Axial Zero-Field Splitting

Authors

  • Prof. Enrique Colacio,

    Corresponding author
    1. Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Avda de Fuentenueva s/n, 18071 Granada (Spain)
    • Enrique Colacio, Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Avda de Fuentenueva s/n, 18071 Granada (Spain)

      Euan K. Brechin, EaStCHEM School of Chemistry, The University of Edinburgh, West Mains Road, Edinburgh, EH9 3JJ (UK)

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  • Dr. José Ruiz,

    1. Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Avda de Fuentenueva s/n, 18071 Granada (Spain)
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  • Prof. Eliseo Ruiz,

    1. Departament de Química Inorgànica and Institut de Recerca de Química Teòrica i Computacional, Universitat de Barcelona, Diagonal 645, 08028 Barcelona (Spain)
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  • Eduard Cremades,

    1. Departament de Química Inorgànica and Institut de Recerca de Química Teòrica i Computacional, Universitat de Barcelona, Diagonal 645, 08028 Barcelona (Spain)
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  • Dr. J. Krzystek,

    1. National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310 (USA)
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  • Prof. Stefano Carretta,

    1. Dipartimento di Fisica e Scienze della terra, Università de Parma and Unità CNISM di Parma, 43124 Parma (Italy)
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  • Dr. Joan Cano,

    1. Instituto de Ciencia Molecular (ICMOL) and Fundació General de la Universitat de València (FGUV), Universitat de València, 46980 Paterna, València (Spain)
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  • Dr. Tatiana Guidi,

    1. ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX (UK)
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  • Dr. Wolfgang Wernsdorfer,

    1. Institut Néel-CNRS, 38042 Grenoble (France)
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  • Prof. Euan K. Brechin

    Corresponding author
    1. EaStCHEM School of Chemistry, The University of Edinburgh, West Mains Road, Edinburgh, EH9 3JJ (UK)
    • Enrique Colacio, Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Avda de Fuentenueva s/n, 18071 Granada (Spain)

      Euan K. Brechin, EaStCHEM School of Chemistry, The University of Edinburgh, West Mains Road, Edinburgh, EH9 3JJ (UK)

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  • This work was supported by the MINECO (Spain) (Project CTQ2011-24478), the Junta de Andalucía (FQM-195 and Project of excellence P08-FQM-03705), and the University of Granada. E.R. and E.Cr. thank MINECO grant No. CTQ2011-23862-C02-01 and Generalitat de Catalunya grant No. 2009SGR-1459, for financial support. We would like to thank Prof. Liviu Chibotaru for providing us the SINGLE_ANISO program and Dr. Andrew Ozarowski for the EPR simulation software. E.K.B. thanks the EPSRC and Leverhulme Trust for financial support. The NHMFL is funded by the NSF, DoE, and the state of Florida. J.C. acknowledges financial support by the Spanish Ministerio de Ciencia e Innovación through projects CTQ2010-15364, Molecular Nanoscience (Consolider Ingenio CSD2007-00010), and Generalitat Valenciana (PROMETEO/2009/108). W.W. acknowledges the ARN-PNANO project MolNanoSpin No. ANR-08-NANO-002 and the ERC Advanced Grant MolNanoSpin No. 226558. J.K. acknowledges NSF grant DMR 1157490.

Abstract

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A magnetic Co-production: The complex [Co(μ-L)(μ-OAc)Y(NO3)2] (see structure O red, N blue, C gray), in which the CoII ion exhibits a D value of approximately +45 cm−1, as determined by magnetic and inelastic neutron scattering experiments, exhibits slow magnetic relaxation and single-ion magnet behavior.

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