ChemInform Abstract: Magnetism and Electronic Structure of Gd5Bi3 and Gd4Bi3.
Abstract
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ChemInform Abstract
Gd5Bi3 and Gd4Bi3 exhibit different magnetic, transport, and spectroscopic properties, although their stoichiometries are close to each other. Gd4Bi3 is a ferromagnet with a high TC, whereas magnetic ordering in Gd5Bi3 is complex and takes place at much lower temperatures. Besides a ferromagnetic-like transition at around 100 K a spin reorientation or freezing is observed below 60 K. XPS results confirm conclusions derived from previous systematic studies of various Gd compounds. Bonding in Gd compounds is related with a charge redistribution, which is characteristic for each system. The study indicates that there is a correlation between the shape of the valence band close to the Fermi level and the magnetic properties.
