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Structural response to the magnetic pre-ordering in LiFeSi2O6

Author

Listed:
  • Rajiv K. Maurya

    (School of Basic Sciences, Indian Institute of Technology Mandi)

  • Priyamedha Sharma

    (School of Basic Sciences, Indian Institute of Technology Mandi)

  • Rajeev Rawat

    (UGC DAE Consortium for Scientific Research, University Campus)

  • Ravi S. Singh

    (IISER Bhopal)

  • Bindu R.

    (School of Basic Sciences, Indian Institute of Technology Mandi)

Abstract

We investigate the temperature evolution of the structural parameters of potential ferrotoroidic LiFeSi2O6 compound across structural and magnetic phase transitions. The structural transition, TS is ~230 K and the paramagnetic to antiferromagnetic transition, TN is ~18 K. The lattice parameters exhibit unusual temperature dependence and based on its behaviour, the experimental results can be divided into 3 regions. In region I (300 K to 240 K), the cell parameters are mainly governed by mere thermal effect. As the compound enters region II (below 240 K to 30 K), the lattice parameters show non-linear behaviour. In this region, the exchange pathways that lead to the magnetic interactions within and between the Fe–Fe chains do not show significant response. The region III (below 30 K) is dominated by the magnetic contribution where we observe setting up of both intra and inter-chain magnetic interactions which could be the possible reason for the ferrotorodic behaviour observed in this compound. We believe that the present results will be helpful in understanding the evolution of spin rings that gives rise to net toroidal moment and its consequent properties. Graphical abstract

Suggested Citation

  • Rajiv K. Maurya & Priyamedha Sharma & Rajeev Rawat & Ravi S. Singh & Bindu R., 2019. "Structural response to the magnetic pre-ordering in LiFeSi2O6," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 92(8), pages 1-6, August.
    • Handle: RePEc:spr:eurphb:v:92:y:2019:i:8:d:10.1140_epjb_e2019-90757-x
    DOI: 10.1140/epjb/e2019-90757-x
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    Keywords

    Solid State and Materials;

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