Magnetism and electronic dynamics in $CuCr_{2-x}Sn_xS_4$ spinels studied by transferred hyperfine fields at $^{119}Sn$ and muon spin rotation and relaxation
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arXiv
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| Auteurs principaux: | , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866915482134642688 |
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| author | Sadrollahi, Elaheh Medrano, Cynthia P. C. Heringer, Magno A. V. Saitovitch, E. M. Baggio Prodan, Lilian Tsurkan, Vladimir Litterst, F. Jochen |
| author_facet | Sadrollahi, Elaheh Medrano, Cynthia P. C. Heringer, Magno A. V. Saitovitch, E. M. Baggio Prodan, Lilian Tsurkan, Vladimir Litterst, F. Jochen |
| contents | We investigated magnetization, muon spin rotation ($μ$SR), and $^{119}Sn$ Mössbauer spectroscopy on Sn substituted $CuCr_{2-x}Sn_xS_4$ (x=0.03 and 0.08) spinel compounds. The magnetization and $μ$SR 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 hyperfine spectra are less pronounced and are discussed in view of the different positions of the local probes $μ^+$ and $^{119}Sn$ and their different magnetic coupling to the magnetic Cr lattice. Above 80 K, both $μ$SR 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_05151 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Magnetism and electronic dynamics in $CuCr_{2-x}Sn_xS_4$ spinels studied by transferred hyperfine fields at $^{119}Sn$ and muon spin rotation and relaxation Sadrollahi, Elaheh Medrano, Cynthia P. C. Heringer, Magno A. V. Saitovitch, E. M. Baggio Prodan, Lilian Tsurkan, Vladimir Litterst, F. Jochen Strongly Correlated Electrons We investigated magnetization, muon spin rotation ($μ$SR), and $^{119}Sn$ Mössbauer spectroscopy on Sn substituted $CuCr_{2-x}Sn_xS_4$ (x=0.03 and 0.08) spinel compounds. The magnetization and $μ$SR 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 hyperfine spectra are less pronounced and are discussed in view of the different positions of the local probes $μ^+$ and $^{119}Sn$ and their different magnetic coupling to the magnetic Cr lattice. Above 80 K, both $μ$SR 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. |
| title | Magnetism and electronic dynamics in $CuCr_{2-x}Sn_xS_4$ spinels studied by transferred hyperfine fields at $^{119}Sn$ and muon spin rotation and relaxation |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2501.05151 |