Testing the Applicability of 119Sn Mössbauer Spectroscopy for the Internal Stress Study in Ternary and Co-Doped Ni-Mn-Sn Metamagnetic Alloys
| Autor: | José Ángel García, J. S. Garitaonandia, I. Unzueta, Fernando Plazaola, Vicente Recarte, José Ignacio Pérez-Landazábal, J. López-García, Vicente Sánchez-Alarcos, José Alberto Rodríguez-Velamazán |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
lcsh:TN1-997
Materials science Magnetism Annealing (metallurgy) 119Sn Mössbauer spectroscopy MathematicsofComputing_GENERAL Analytical chemistry 02 engineering and technology 01 natural sciences Condensed Matter::Materials Science 0103 physical sciences Mössbauer spectroscopy General Materials Science Singlet state Hyperfine structure lcsh:Mining engineering. Metallurgy 010302 applied physics Austenite Metals and Alloys metamagnetic shape memory alloys 021001 nanoscience & nanotechnology internal stress Stress field TheoryofComputation_MATHEMATICALLOGICANDFORMALLANGUAGES structural defects 0210 nano-technology Ternary operation |
| Zdroj: | Addi: Archivo Digital para la Docencia y la Investigación Universidad del País Vasco 'Metals ', vol: 11, pages: 450-1-450-12 (2021) Metals, Vol 11, Iss 450, p 450 (2021) Metals Volume 11 Issue 3 Addi. Archivo Digital para la Docencia y la Investigación Universidad de Cantabria (UC) instname |
| Popis: | The influence of both the Co addition and the internal stress on the atomic level magnetism is comparatively studied in Ni50Mn37Sn13 and Ni45Mn38Sn13Co4 alloys by magnetic measurements and 119Sn Mössbauer spectroscopy. The results show that the saturation magnetization and the hyperfine field follow the same temperature trend. The internal stress state is investigated by subjecting the samples to milling and annealing treatments, and tracking the singlet component revealed by 119Sn Mössbauer spectroscopy. Contrary to what was expected, in the Co-doped Ni-Mn-Sn sample the singlet component can be resolved between the milled and annealed states in both martensite and austenite phases. Therefore, the results demonstrate the feasibility of tracking the singlet component upon the structural recovery in Co-doped Ni-Mn-Sn alloys in a much wider range than in ternary alloys. In addition, it is concluded that the transferred dipolar field at Sn from the neighbor magnetic atoms depends very strongly on the stress field and on the microstructural order surrounding Sn atoms. The observed sensitivity of Sn Mössbauer probe atoms to slight microstructural distortions make 119Sn a powerful technique for the characterization of the stress present in Sn containing metamagnetic shape memory alloys. |
| Databáze: | OpenAIRE |
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