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Magnetic properties of the complex concentrated alloy system CoFeNi(0.5)Cr(0.5)Al(x)
We study the change in magnetisation with paramagnetic Al addition in the CoFeNi(0.5)Cr(0.5)–Al(x) (x: 0, 0.5, 1, and 1.5) complex concentrated alloy. The compositions were developed utilising the Mulliken electronegativity and d-electron/atom ratio. Spherical FeCr rich nanoprecipitates are observed...
| Autores principales: | , , , , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
| Publicado: |
Nature Publishing Group UK
2020
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7468281/ https://www.ncbi.nlm.nih.gov/pubmed/32879420 http://dx.doi.org/10.1038/s41598-020-71463-3 |
| Sumario: | We study the change in magnetisation with paramagnetic Al addition in the CoFeNi(0.5)Cr(0.5)–Al(x) (x: 0, 0.5, 1, and 1.5) complex concentrated alloy. The compositions were developed utilising the Mulliken electronegativity and d-electron/atom ratio. Spherical FeCr rich nanoprecipitates are observed for X: 1.0 and 1.5 in an AlCoNi-rich matrix. A ~ 5 × increase in magnetisation (from 22 to 96 Am(2)/kg) coincides with this nanoprecipitate formation—the main magnetic contribution is determined to be from FeCr nanoprecipitates. The magnetisation increase is strange as paramagnetic Al addition dilutes the ferromagnetic Fe/Co/Ni additions. In this paper we discuss the magnetic and structural characterisation of the CoFeNi(0.5)Cr(0.5)–Al(x) composition and attempt to relate it to the interfacial energy. |
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