Magnetostructural transition in Fe{sub 5}SiB{sub 2} observed with neutron diffraction

Journal Article · Tue Mar 15 00:00:00 EDT 2016 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/J.JSSC.2015.12.016· OSTI ID:22577791

Cedervall, Johan ^[1]; Kontos, Sofia ^[2]; Hansen, Thomas C. ^[3]; Balmes, Olivier; Martinez-Casado, Francisco Javier; Matej, Zdenek ^[4]; Beran, Premysl ^[5]; Svedlindh, Peter; Gunnarsson, Klas ^[2]; Sahlberg, Martin ^[1]

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1. Department of Chemistry - Ångström Laboratory, Uppsala University, Box 538, 751 21 Uppsala (Sweden)
2. Department of Engineering Sciences, Uppsala University, Box 534, 751 21 Uppsala (Sweden)
3. Institut Laue-Langevin, B.P. 156, 38042 Grenoble Cedex 9 (France)
4. MAX IV Laboratory, Lund University, Box 118, 221 00 Lund (Sweden)
5. Nuclear Physics Institute, Academy of Sciences of the Czech Republic, 25068 Rez (Czech Republic)

The crystal and magnetic structure of Fe{sub 5}SiB{sub 2} has been studied by a combination of X-ray and neutron diffraction. Also, the magnetocrystalline anisotropy energy constant has been estimated from magnetisation measurements. High quality samples have been prepared using high temperature synthesis and subsequent heat treatment protocols. The crystal structure is tetragonal within the space group I4/mcm and the compound behaves ferromagnetically with a Curie temperature of 760 K. At 172 K a spin reorientation occurs in the compound and the magnetic moments go from aligning along the c-axis (high T) down to the ab-plane (low T). The magnetocrystalline anisotropy energy constant has been estimated to 0.3 MJ/m{sup 3} at 300 K. - Highlights: • The crystal and magnetic structure of Fe{sub 5}SiB{sub 2} has been studied by diffraction. • At 172 K a spin reorientation occurs in the compound. • The magnetic moments are aligned along the c-axis at high T. • The magnetic moments are aligned in the ab-plane at low T. • The magnetocrystalline anisotropy energy constant has been estimated to 0.3 MJ/m{sup 3}.

• OSTI ID: 22577791
• Journal Information: Journal of Solid State Chemistry, Vol. 235; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ANISOTROPY
BORON COMPOUNDS
CRYSTALS
CURIE POINT
HEAT TREATMENTS
IRON COMPOUNDS
MAGNETIC MOMENTS
MAGNETISM
MAGNETIZATION
NEUTRON DIFFRACTION
NEUTRONS
PERMANENT MAGNETS
SILICON COMPOUNDS
SPACE GROUPS
SPIN
SYNTHESIS
TETRAGONAL LATTICES
X RADIATION
X-RAY DIFFRACTION