Abstract
In this study we report the magnetic properties of new ternary compound Ce5AgGe2. The electronic ground state properties of Ce5AgGe2 were characterized by magnetic susceptibility, magnetization, specific heat, and electrical resistivity measurements, and by investigations of the electronic structure (XPS study and band structure calculations). This novel phase was found to be ferromagnetic type with Curie temperature TC=14.6 K in coexistence with spin-glass-like phase. Ce5AgGe2 crystallizes in Mn5Si3P63/mcm structure with Ag and Ge atoms randomly distributed at 6g Wyckoff positions. To explain a variety of magnetic properties we analyzed different possibilities of the occupation of 6g sites by Ag atoms and the impact of the local atomic environment of Ce ions on its mixed (static) valence.
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