https://doi.org/10.1140/epjb/s10051-025-01046-6
Regular Article - Solid State and Materials
Magnetism and electronic dynamics in CuCr2-xSnxS4 spinels studied by transferred hyperfine fields at 119Sn and muon spin rotation and relaxation
1
Institut für Festkörper- und Materialphysik, Technische Universität Dresden, 01069, Dresden, Germany
2
Centro Brasileiro de Pesquisas Físicas, 22290-180, Rio de Janeiro, Brazil
3
Experimental Physics V, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, 86135, Augsburg, Germany
4
Institute of Applied Physics, Moldova State University, 2028, Chisinau, MD, Republic of Moldova
5
Institut Für Physik Der Kondensierten Materie, Technische Universität Braunschweig, 38106, Brunswick, Germany
a
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Received:
4
March
2025
Accepted:
11
September
2025
Published online:
22
September
2025
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.
Supplementary Information The online version contains supplementary material available at https://doi.org/10.1140/epjb/s10051-025-01046-6.
© The Author(s) 2025
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