Journal article
Magnetic ordering in the nano-laminar ternary Mn2AlB2 using neutron and X-ray diffraction
Journal of magnetism and magnetic materials, v 471, pp 468-474
01 Feb 2019
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Abstract
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•First time measurement of Mn2Al11B2 using neutron powder diffraction.•Mn2Al11B2 is determined to be an antiferromagnet at room temperature and below.•Magnetostriction is observed for the lattice parameters around room temperature.•Indications for a canted magnetic structure in Mn2Al11B2 are found.
The nano-laminar ceramic Mn2AlB2 belongs to the orthorhombic M2AlB2 system (M = Cr, Fe, Mn), in which Fe2AlB2 was shown to be ferromagnetic near room temperature. Herein, the magnetic state of Mn2Al11B2 is investigated using magnetization measurements, in the 5–360 K temperature range, X-ray diffraction in the 300–800 K range and neutron diffraction in the 1.6–300 K range. From the totality of our results we conclude that below ∼390 K Mn2AlB2 becomes a canted antiferromagnet. The crystallographic unit cell is doubled along the c axis (i.e. a propagation vector of 0,0,1/2) and the ordered Mn magnetic moments are oriented either along the a or the b axes, with a magnetic moment reaching 0.71(2) µB per Mn atom at 1.6 K. This magnetic structure is in excellent agreement with, and contributes to the validity of the recently reported theoretical calculations for the (Fe1−xMnx)2AlB2 system.
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Details
- Title
- Magnetic ordering in the nano-laminar ternary Mn2AlB2 using neutron and X-ray diffraction
- Creators
- D. Potashnikov - Technion – Israel Institute of TechnologyE.N. Caspi - Drexel UniversityA. Pesach - Ben-Gurion University of the NegevA. Hoser - Helmholtz-Zentrum Berlin für Materialien und EnergieS. Kota - Drexel UniversityL. Verger - Drexel UniversityM.W. Barsoum - Drexel UniversityI. Felner - The Racah Institute of PhysicsA. Keren - Technion – Israel Institute of TechnologyO. Rivin - Helmholtz-Zentrum Berlin für Materialien und Energie
- Publication Details
- Journal of magnetism and magnetic materials, v 471, pp 468-474
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000450089600068
- Scopus ID
- 2-s2.0-85054440891
- Other Identifier
- 991019169005404721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Physics, Condensed Matter