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Magnetic and mechan...
Magnetic and mechanical effects of Mn substitutions in AlFe2B2
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- Cedervall, Johan (författare)
- Uppsala universitet,Oorganisk kemi
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Andersson, Mikael (författare)
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- Iusan, Diana (författare)
- Uppsala universitet,Materialteori
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- Delczeg-Czirjak, Erna Krisztina (författare)
- Uppsala universitet,Materialteori
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- Jansson, Ulf, 1960- (författare)
- Uppsala universitet,Oorganisk kemi
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- Nordblad, Per (författare)
- Uppsala universitet,Fasta tillståndets fysik
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- Sahlberg, Martin, 1981- (författare)
- Uppsala universitet,Oorganisk kemi
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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 .- 1873-4766. ; 482, s. 54-60
- Relaterad länk:
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http://arxiv.org/pdf...
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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 mechanical and magnetic properties of the newly discovered MAB-phase class of materials based upon AlFe2B2 were investigated. The samples were synthesised from stoichiometric amounts of all constituent elements. X-ray diffraction shows that the main phase is orthorhombic with an elongated b-axis, similar to AlFe2B2. The low hardness and visual inspection of the samples after deformation indicate that these compounds are deformed via a delamination process. When substituting iron in AlFe2B2 with manganese, the magnetism in the system goes from being ferro- to antiferromagnetic via a disordered ferrimagnetic phase exhibited by AlFeMnB2. Density functional theory calculations indicate a weakening of the magnetic interactions among the transitions metal ions as iron is substituted by manganese in AlFe2B2. The Mn-Mn exchange interactions in AlMn2B2 are found to be very small.
Ämnesord
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
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