Magnetic structure of the magnetocaloric compound AlFe2B2

0458221 - ÚJF 2017 RIV CH eng J - Článek v odborném periodiku
Cedervall, J. - Andersson, M. S. - Sarkar, T. - Delczeg-Czirjak, E. K. - Bergqvist, L. - Hansen, T. C. - Beran, Přemysl - Nordblad, P. - Sahlberg, M.
Magnetic structure of the magnetocaloric compound AlFe2B2.
Journal of Alloys and Compounds. Roč. 664, APR (2016), s. 784-791. ISSN 0925-8388. E-ISSN 1873-4669
Institucionální podpora: RVO:61389005
Klíčová slova: X-ray diffraction * neutron diffraction * magnetic structure
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 3.133, rok: 2016

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.
Trvalý link: http://hdl.handle.net/11104/0258496