1. Mössbauer study of the magnetocaloric compound AlFe B.
- Author
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Cedervall, Johan, Häggström, Lennart, Ericsson, Tore, and Sahlberg, Martin
- Subjects
- *
MOSSBAUER spectroscopy , *MAGNETOCALORIC effects , *MAGNETIC measurements , *ELECTRIC fields , *INFORMATION asymmetry - Abstract
Mössbauer spectroscopy in the ferromagnetic AlFe B reveals T=299 K and shows good agreement with magnetic measurements. The crystals are plate-shaped. The flakes are found from X-ray diffraction to be in the crystallographic ac-plane in the orthorhombic system. The axes of the principle electric field gradient tensor are, by symmetry, colinear with the crystal a-, b- and c-axes. By using information about the quadrupole splitting and line asymmetry in the paramagnetic regime together with the quadrupole shift of the resonance lines in the ferromagnetic regime the magnetic hyperfine field direction is found to be in the ab-plane having an angle =40 to the b-axis. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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