Magnetic Structure and Strain State in Fe/V Superlattices Studied by <sup>57</sup>Fe<sup>+</sup> Emission and Conversion Electron Mössbauer Spectroscopy
The magnetic properties of the Fe/V superlattices were studied by conventional Conversion Electron Mössbauer Spectroscopy (CEMS) and online <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></...
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MDPI AG
2022-07-01
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| author | Torben E. Mølholt Sveinn Ólafsson Haraldur P. Gunnlaugsson Bingcui Qi Karl Johnston Roberto Mantovan Hilary Masenda Krish Bharuth-Ram Hafliði P Gíslason Guido Langouche Deena Naidoo |
| author_facet | Torben E. Mølholt Sveinn Ólafsson Haraldur P. Gunnlaugsson Bingcui Qi Karl Johnston Roberto Mantovan Hilary Masenda Krish Bharuth-Ram Hafliði P Gíslason Guido Langouche Deena Naidoo |
| author_sort | Torben E. Mølholt |
| collection | DOAJ |
| description | The magnetic properties of the Fe/V superlattices were studied by conventional Conversion Electron Mössbauer Spectroscopy (CEMS) and online <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mn>57</mn></msup></semantics></math></inline-formula>Fe<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mo>+</mo></msup></semantics></math></inline-formula> emission Mössbauer Spectroscopy (eMS) at room temperature (RT) at ISOLDE/CERN. The unique depth-enhanced sensitivity and ultradiluted regime of the probe atoms adopted in this eMS facility enabled the investigation of the magnetic structures and the strain state in the superlattice layers and at the interfaces. The magnetic spectra of the superlattices were found to depend on both the local lattice environment and the strain state of the Fe-lattices. The magnetic polarisation in the V-layers or at the interfaces was not detected at RT. Spectral broadening was evident in the single line component of the eMS due to Fe ions substituted at V-lattice sites in the V-layers of the superlattice, attributable to the lattice strain in the V-layers. Our study demonstrate that with the online eMS technique the effects of the strain state of the superlattice on the magnetic properties of the Fe-layer in the Fe/V multilayer structures can be detected. |
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| language | English |
| last_indexed | 2024-03-09T10:20:13Z |
| publishDate | 2022-07-01 |
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| series | Crystals |
| spelling | doaj.art-5740aa4c393b4e9286f816199e6f64ce2023-12-01T22:02:34ZengMDPI AGCrystals2073-43522022-07-0112796110.3390/cryst12070961Magnetic Structure and Strain State in Fe/V Superlattices Studied by <sup>57</sup>Fe<sup>+</sup> Emission and Conversion Electron Mössbauer SpectroscopyTorben E. Mølholt0Sveinn Ólafsson1Haraldur P. Gunnlaugsson2Bingcui Qi3Karl Johnston4Roberto Mantovan5Hilary Masenda6Krish Bharuth-Ram7Hafliði P Gíslason8Guido Langouche9Deena Naidoo10Science Institute, University of Iceland, Dunhagi 3, 107 Reykjavík, IcelandScience Institute, University of Iceland, Dunhagi 3, 107 Reykjavík, IcelandScience Institute, University of Iceland, Dunhagi 3, 107 Reykjavík, IcelandScience Institute, University of Iceland, Dunhagi 3, 107 Reykjavík, IcelandPhysics Department, ISOLDE, CERN, 1211 Geneva, SwitzerlandCNR-IMM, Unit of Agrate Brianza, Via Olivetti 2, 20864 Agrate Brianza, ItalySchool of Physics, University of the Witwatersrand, Johannesburg 2050, South AfricaPhysics Department, Durban University of Technology, Durban 4000, South AfricaScience Institute, University of Iceland, Dunhagi 3, 107 Reykjavík, IcelandInstituut voor Kern-en Stralings Fysika, University of Leuven, 3001 Leuven, BelgiumSchool of Physics, University of the Witwatersrand, Johannesburg 2050, South AfricaThe magnetic properties of the Fe/V superlattices were studied by conventional Conversion Electron Mössbauer Spectroscopy (CEMS) and online <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mn>57</mn></msup></semantics></math></inline-formula>Fe<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mo>+</mo></msup></semantics></math></inline-formula> emission Mössbauer Spectroscopy (eMS) at room temperature (RT) at ISOLDE/CERN. The unique depth-enhanced sensitivity and ultradiluted regime of the probe atoms adopted in this eMS facility enabled the investigation of the magnetic structures and the strain state in the superlattice layers and at the interfaces. The magnetic spectra of the superlattices were found to depend on both the local lattice environment and the strain state of the Fe-lattices. The magnetic polarisation in the V-layers or at the interfaces was not detected at RT. Spectral broadening was evident in the single line component of the eMS due to Fe ions substituted at V-lattice sites in the V-layers of the superlattice, attributable to the lattice strain in the V-layers. Our study demonstrate that with the online eMS technique the effects of the strain state of the superlattice on the magnetic properties of the Fe-layer in the Fe/V multilayer structures can be detected.https://www.mdpi.com/2073-4352/12/7/961Fe/V superlatticesmagnetic propertiesstrainMössbauer Spectroscopyhyperfine parameters |
| spellingShingle | Torben E. Mølholt Sveinn Ólafsson Haraldur P. Gunnlaugsson Bingcui Qi Karl Johnston Roberto Mantovan Hilary Masenda Krish Bharuth-Ram Hafliði P Gíslason Guido Langouche Deena Naidoo Magnetic Structure and Strain State in Fe/V Superlattices Studied by <sup>57</sup>Fe<sup>+</sup> Emission and Conversion Electron Mössbauer Spectroscopy Crystals Fe/V superlattices magnetic properties strain Mössbauer Spectroscopy hyperfine parameters |
| title | Magnetic Structure and Strain State in Fe/V Superlattices Studied by <sup>57</sup>Fe<sup>+</sup> Emission and Conversion Electron Mössbauer Spectroscopy |
| title_full | Magnetic Structure and Strain State in Fe/V Superlattices Studied by <sup>57</sup>Fe<sup>+</sup> Emission and Conversion Electron Mössbauer Spectroscopy |
| title_fullStr | Magnetic Structure and Strain State in Fe/V Superlattices Studied by <sup>57</sup>Fe<sup>+</sup> Emission and Conversion Electron Mössbauer Spectroscopy |
| title_full_unstemmed | Magnetic Structure and Strain State in Fe/V Superlattices Studied by <sup>57</sup>Fe<sup>+</sup> Emission and Conversion Electron Mössbauer Spectroscopy |
| title_short | Magnetic Structure and Strain State in Fe/V Superlattices Studied by <sup>57</sup>Fe<sup>+</sup> Emission and Conversion Electron Mössbauer Spectroscopy |
| title_sort | magnetic structure and strain state in fe v superlattices studied by sup 57 sup fe sup sup emission and conversion electron mossbauer spectroscopy |
| topic | Fe/V superlattices magnetic properties strain Mössbauer Spectroscopy hyperfine parameters |
| url | https://www.mdpi.com/2073-4352/12/7/961 |
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