Influence of nano-VC on the structural and magnetic properties of MnAlC-alloy
Abstract Alloys of Mn55Al45C2 with additions of VC nano-particles have been synthesized and their properties evaluated. The Mn55Al45C2(VC) x (x = 0.25, 0.5 and 1) alloys have been prepared by induction melting resulting in a high content of the ferromagnetic τ-phase (> 94 wt.%). Powder X-ray diff...
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Nature Portfolio
2021
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oai:doaj.org-article:21d877175fb54cccab064bc0c24231572021-12-02T16:08:06ZInfluence of nano-VC on the structural and magnetic properties of MnAlC-alloy10.1038/s41598-021-93395-22045-2322https://doaj.org/article/21d877175fb54cccab064bc0c24231572021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-93395-2https://doaj.org/toc/2045-2322Abstract Alloys of Mn55Al45C2 with additions of VC nano-particles have been synthesized and their properties evaluated. The Mn55Al45C2(VC) x (x = 0.25, 0.5 and 1) alloys have been prepared by induction melting resulting in a high content of the ferromagnetic τ-phase (> 94 wt.%). Powder X-ray diffraction indicates that nano-VC can be dissolved in the alloy matrix up to 1 at.%. On the other side, metallography investigations by scanning electron microscopy and scanning transmission electron microscope show inclusions of the nanosized additives in the microstructure. The effect of nano-VC on the grain and twin boundaries has been studied by electron backscattering diffraction. The magnetization has been measured by magnetometry up to 9 T while the domain structure has been studied using both magnetic force microscopy as well as Kerr-microscopy. For nano-VC contents above 0.25 at.%, a clear increase of the coercive force is observed, from 57 to 71 kA/m. The optimum appears to be for 0.5 at.% nano-VC which shows a 25% increase in coercive force without losing any saturation magnetization. This independent increase in coercivity is believed to originate from the nano-VC reducing the overall magnetic domain size. Overall, we observe that addition of nano-VC could be an interesting route to increase the coercive force of MnAl, without sacrificing saturation magnetization.Vitalii ShtenderHenry StopfelDaniel HedlundDennis KarlssonRajasekhar PothalaBjörn SkårmanFredrik OlssonHilmar VidarssonGabriella AnderssonPeter SvedlindhMartin SahlbergNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021) |
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Medicine R Science Q Vitalii Shtender Henry Stopfel Daniel Hedlund Dennis Karlsson Rajasekhar Pothala Björn Skårman Fredrik Olsson Hilmar Vidarsson Gabriella Andersson Peter Svedlindh Martin Sahlberg Influence of nano-VC on the structural and magnetic properties of MnAlC-alloy |
| description |
Abstract Alloys of Mn55Al45C2 with additions of VC nano-particles have been synthesized and their properties evaluated. The Mn55Al45C2(VC) x (x = 0.25, 0.5 and 1) alloys have been prepared by induction melting resulting in a high content of the ferromagnetic τ-phase (> 94 wt.%). Powder X-ray diffraction indicates that nano-VC can be dissolved in the alloy matrix up to 1 at.%. On the other side, metallography investigations by scanning electron microscopy and scanning transmission electron microscope show inclusions of the nanosized additives in the microstructure. The effect of nano-VC on the grain and twin boundaries has been studied by electron backscattering diffraction. The magnetization has been measured by magnetometry up to 9 T while the domain structure has been studied using both magnetic force microscopy as well as Kerr-microscopy. For nano-VC contents above 0.25 at.%, a clear increase of the coercive force is observed, from 57 to 71 kA/m. The optimum appears to be for 0.5 at.% nano-VC which shows a 25% increase in coercive force without losing any saturation magnetization. This independent increase in coercivity is believed to originate from the nano-VC reducing the overall magnetic domain size. Overall, we observe that addition of nano-VC could be an interesting route to increase the coercive force of MnAl, without sacrificing saturation magnetization. |
| format |
article |
| author |
Vitalii Shtender Henry Stopfel Daniel Hedlund Dennis Karlsson Rajasekhar Pothala Björn Skårman Fredrik Olsson Hilmar Vidarsson Gabriella Andersson Peter Svedlindh Martin Sahlberg |
| author_facet |
Vitalii Shtender Henry Stopfel Daniel Hedlund Dennis Karlsson Rajasekhar Pothala Björn Skårman Fredrik Olsson Hilmar Vidarsson Gabriella Andersson Peter Svedlindh Martin Sahlberg |
| author_sort |
Vitalii Shtender |
| title |
Influence of nano-VC on the structural and magnetic properties of MnAlC-alloy |
| title_short |
Influence of nano-VC on the structural and magnetic properties of MnAlC-alloy |
| title_full |
Influence of nano-VC on the structural and magnetic properties of MnAlC-alloy |
| title_fullStr |
Influence of nano-VC on the structural and magnetic properties of MnAlC-alloy |
| title_full_unstemmed |
Influence of nano-VC on the structural and magnetic properties of MnAlC-alloy |
| title_sort |
influence of nano-vc on the structural and magnetic properties of mnalc-alloy |
| publisher |
Nature Portfolio |
| publishDate |
2021 |
| url |
https://doaj.org/article/21d877175fb54cccab064bc0c2423157 |
| work_keys_str_mv |
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| _version_ |
1718384581749506048 |