Complex magnetic ordering in EuAl4–A 151Eu Mössbauer study
Source abstract
Abstract
151Eu Mössbauer spectroscopy has been used to investigate the behaviour of EuAl4 through the four magnetic transitions that occur below 16 K. We find clear evidence for the first transition (TN1, the onset of order) where an incommensurate modulated magnetic structure appears, and the third (TN3) where the modulation disappears at the tetragonal → orthorhombic structural transition. We see no changes at the lowest transition (TN4) but find that the modulation amplitude passes through a maximum at TN2. Data on the isostructural but magnetically simpler EuGa4 are also presented for comparison.
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Research context
OpenAlex topics: Rare-earth and actinide compounds · Iron-based superconductors research · Magnetic and transport properties of perovskites and related materials
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Affiliations
Physics Department and Centre for the Physics of Materials, McGill University 1 , 3600 University Street, Montreal, QC H3A 2T8, Canada
Ames National Laboratory, U.S. Department of Energy, Iowa State University 2 , Ames, Iowa 50011-3020, USA
Department of Physics and Astronomy, Iowa State University 3 , Ames, Iowa 50011, USA
Funding
Natural Sciences and Engineering Research Council of Canada · FQRNT · DOE · CATS
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