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Measured and calcul...
Measured and calculated properties of B-doped τ-phase MnAl : A rare earth free permanent magnet
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- Kontos, Sofia (författare)
- Uppsala universitet,Fasta tillståndets fysik
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- Fang, Hailiang (författare)
- Uppsala universitet,Oorganisk kemi
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- Li, Jiheng (författare)
- Uppsala universitet,Oorganisk kemi
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- Delczeg-Czirjak, Erna Krisztina (författare)
- Uppsala universitet,Materialteori
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- Shafeie, Samrand (författare)
- Uppsala universitet,Oorganisk kemi
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- Svedlindh, Peter (författare)
- Uppsala universitet,Fasta tillståndets fysik
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- Sahlberg, Martin, 1981- (författare)
- Uppsala universitet,Oorganisk kemi
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- Gunnarsson, Klas (författare)
- Uppsala universitet,Fasta tillståndets fysik
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(creator_code:org_t)
- Elsevier BV, 2019
- 2019
- Engelska.
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Ingår i: Journal of Magnetism and Magnetic Materials. - : Elsevier BV. - 0304-8853. ; 474, s. 591-598
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The metastable tetragonal τ-phase MnAl has been doped interstitially with B through a drop synthesis method creating the (Mn0.55Al0.45)B0.02 compound. The as-casted samples were annealed, quenched and thereafter ball-milled and relaxed in order to decrease grain size and reduce the number of crystallographic defects. The Curie temperature of the quenched sample was estimated to 655 K. The magnetization, coercivity and anisotropy were analyzed with respect to flash-milling time, relaxation time and temperature. The results show that (Mn0.55Al0.45)B0.02 could be directly obtained from drop synthesis. The highest measured saturation magnetization of 393 kA/m (measured at ±1440kA/m) was achieved with a relaxation process after 1.5h milling, giving a theoretical maximum energy product of 48 kJ/m3. The highest value of the coercivity was 355 kA/m achieved by flash-milling for 10 h. However, the high coercivity was achieved at an expense of low saturation magnetization.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- Permanent magnets; Rare-Earth-free; Diffraction; Magnetometry; Computational modeling
- Fysik
- Physics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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