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Towards the extraction and control of the Hamiltonian parameters of spin-3/2 Co(II) antiferromagnets.

ORAL

Abstract

Low-dimensional magnetism has potential applications in quantum computing and data storage, as well as furthering theoretical understanding of correlated systems, but challenges remain in designing suitable compounds. We will present a methodology to characterise S = 3/2 Co2+ antiferromagnets that make use of lab-based magnetometry and heat capacity techniques. We have synthesised and characterised four new materials: quasi-0-dimensional (Q0D) Co(HF2)2(3-Brpy)4, Q1D [Co(HF2)(3-Clpy)4]BF4, Q2D CoF2(pyz)2 and CoCl2(pyz-D4)2 to test this method. The results imply that by manipulating the starting components of the synthesis process, one can direct the Hamiltonian of these compounds. The effect structure has on the magnetic properties is described, as well as the influence of ligand and magnetic ion substitution by comparison to complexes containing [Ni(pyz)2]2+ sheets.

A.Vasiliev et al., NPJ Quant. Mater. 3, 18 (2018).
J.Liu et al., Inorg. Chem. 55, 3515 (2016).

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Presenters

  • William Blackmore

    Department of Chemistry, University of Manchester, Manchester University

Authors

  • William Blackmore

    Department of Chemistry, University of Manchester, Manchester University

  • Jamie Brambleby

    University of Warwick

  • John Singleton

    National High Magnetic Field Laboratory, Los Alamos National Laboratory, Los Alamos National Lab, Los Alamos National Laboratory, LANL, NHMFL, National High Magnetic Field Laboratory (NHMFL), Los Alamos

  • Martin Lees

    Physics, University of Warwick, University of Warwick, Department of Physics, The University of Warwick, Coventry, CV4 7AL, United Kingdom

  • Jamie L Manson

    Department of Chemistry and Biochemistry, Eastern Washington University, Eastern Washington University

  • Paul Goddard

    Department of Physics, University of Warwick, University of Warwick, Physics, University of Warwick