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Magnetic structure of the magnetocaloric compound AlFe2B2
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2016 (English)In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 664, 784-791 p.Article in journal (Refereed) Published
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Text
Abstract [en]

The crystal and magnetic structures of AlFe2B2 have been studied with a combination of X-ray and neutron diffraction and electronic structure calculations. The magnetic and magnetocaloric properties have been investigated by magnetisation measurements. The samples have been produced using high temperature synthesis and subsequent heat treatments. The compound crystallises in the orthorhombic crystal system Cmmm and it orders ferromagnetically at 285 K through a second order phase transition. At temperatures below the magnetic transition the magnetic moments align along the crystallographic a-axis. The magnetic entropy change from 0 to 800 kA/m was found to be - 1.3 J/K kg at the magnetic transition temperature.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 664, 784-791 p.
Keyword [en]
X-ray diffraction, Neutron diffraction, Magnetic structure, Magnetocaloric effect
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:kth:diva-183302DOI: 10.1016/j.jallcom.2015.12.111ISI: 000369061700101Scopus ID: 2-s2.0-84954450006OAI: oai:DiVA.org:kth-183302DiVA: diva2:910146
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QC 20160308

Available from: 2016-03-08 Created: 2016-03-07 Last updated: 2016-03-19Bibliographically approved

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Bergqvist, LarsBeran, Premysl
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Material Physics, MFSeRC - Swedish e-Science Research Centre
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