Abstract
The magnetic properties of single crystalline EuPtGe3, crystallizing in the non-centrosymmetric BaNiSn3-type crystal structure, have been studied by means of magnetization, electrical resistivity, heat capacity and 151Eu Mössbauer spectroscopy. The susceptibility and heat capacity data indicate a magnetic transition at TN = 11 K. The Mössbauer data confirm this conclusion, but evidence a slight first-order character of the transition. Analysing the magnetization data using a mean field model with two antiferromagnetically coupled sublattices allows us to explain some aspects of the magnetic behaviour, and to derive the first- and second-neighbour exchange integrals in EuPtGe3.
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