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Magnetism and electronic dynamics in CuCr2-xSnxS4 spinels studied by transferred hyperfine fields at 119Sn and muon spin rotation and relaxation

Author

Listed:
  • Elaheh Sadrollahi

    (Technische Universität Dresden)

  • Cynthia P. C. Medrano

    (Centro Brasileiro de Pesquisas Físicas)

  • Magno A. V. Heringer

    (Centro Brasileiro de Pesquisas Físicas)

  • E. M. Baggio Saitovitch

    (Centro Brasileiro de Pesquisas Físicas)

  • Lilian Prodan

    (University of Augsburg
    Moldova State University)

  • Vladimir Tsurkan

    (University of Augsburg
    Moldova State University)

  • F. Jochen Litterst

    (Technische Universität Braunschweig)

Abstract

We investigated magnetization, muon spin rotation and relaxation (µSR), and 119Sn Mössbauer spectroscopy on Sn substituted CuCr2-xSnxS4 (x = 0.03 and 0.08) spinel compounds. The magnetization and µSR results reveal similar additional low-temperature magnetic transitions around 80 K and 40 K as found for the undoped material, indicating a magnetic ground state deviating from a simple collinear ferromagnet. The observed changes in the Mössbauer spectra are less pronounced and are discussed in view of the different positions of the local probes µ+ and 119Sn and their different magnetic coupling to the magnetic Cr lattice. Above 80 K, both µSR and Mössbauer spectra show temperature-dependent inhomogeneous broadening either due to structural or charge disorder and changing spin dynamics that can be related to a precursor magnetic phase above the well-defined static low-temperature phase. Graphical abstract

Suggested Citation

  • Elaheh Sadrollahi & Cynthia P. C. Medrano & Magno A. V. Heringer & E. M. Baggio Saitovitch & Lilian Prodan & Vladimir Tsurkan & F. Jochen Litterst, 2025. "Magnetism and electronic dynamics in CuCr2-xSnxS4 spinels studied by transferred hyperfine fields at 119Sn and muon spin rotation and relaxation," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 98(9), pages 1-13, September.
    • Handle: RePEc:spr:eurphb:v:98:y:2025:i:9:d:10.1140_epjb_s10051-025-01046-6
    DOI: 10.1140/epjb/s10051-025-01046-6
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