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Neutron diffraction and magnetization measurements on CeNi 4.2 Mn 0.8 and Y 0.7 Ni 4.2 Mn 0.8
Author(s) -
Toliński T.,
Kaczorowski D.,
Kowalczyk A.,
Hoser A.,
Stüßer N.,
Talik E.,
Klimczak L. M.
Publication year - 2008
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200844081
Subject(s) - neutron diffraction , materials science , magnetization , crystallite , crystallography , magnetic moment , curie temperature , condensed matter physics , stoichiometry , analytical chemistry (journal) , diffraction , magnetic structure , crystal structure , ferromagnetism , chemistry , magnetic field , physics , metallurgy , chromatography , quantum mechanics , optics
The cubic CeNi 4 Mn compound has been claimed to show a large spin‐polarization, magnetic moment and a high Curie temperature. To verify these properties we have carried out the magnetometric and neutron diffraction experiments on the nominally polycrystalline CeNi 4 Mn and YNi 4 Mn compounds. The real stoichiometry was estimated based on X‐ray photoemission and neutron diffraction as CeNi 4.2 Mn 0.8 and Y 0.7 Ni 4.2 Mn 0.8 . The magnetic properties of Y 0.7 Ni 4.2 Mn 0.8 have been studied with neutron diffraction to investigate the role of the rare earth in CeNi 4.2 Mn 0.8 . We have found that the samples crystallize in the hexagonal CaCu 5 ‐type of structure. The deviation from the cubic structure is ascribed to the presence of a small nonstoichiometry. These structural changes are accompanied by a drop of the magnetic parameters. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)