Effect of Pressure on the Phase Stability and Magnetostructural Transitions in Nickel-rich NiFeGa Ribbons
Ribbons of a Ni55Fe19Ga26 Heusler alloy were prepared by melt spinning technique. The effect of pressure on magnetostructural transitions was studied comparing as-spun ribbons to ribbons previously submitted to an axial pressure and to powder obtained from manually grinded as-spun ribbons. The marte...
| Autores: | ; ; ; ; ; ; ; ; ; |
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| Tipo de documento: | Artículo |
| Estado: | Accepted version |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Universidad de Sevilla (US) |
| Repositorio: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/147218 |
| Acceso en línea: | https://hdl.handle.net/11441/147218 https://doi.org/10.1016/j.jallcom.2020.156092 |
| Nivel de acceso: | Acceso abierto |
| Palabra clave: | 14 M modulated phase Magnetic shape memory alloys Magnetostructural transition Martensite structure |
| Sumario: | Ribbons of a Ni55Fe19Ga26 Heusler alloy were prepared by melt spinning technique. The effect of pressure on magnetostructural transitions was studied comparing as-spun ribbons to ribbons previously submitted to an axial pressure and to powder obtained from manually grinded as-spun ribbons. The martensitic transformation present in the as-spun ribbon almost vanishes after pulverization. The structural change driven by mechanical treatment is a stress-induced intermartensitic transformation from a 14 M modulated to a non-modulated tetragonal (NM) structure. There is a progressive change from the structure of as-spun samples to that of the pulverized one in samples submitted to axial pressures as it increases. |
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