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arXiv · 1011.4876

Antiferromagnetic ordering in EuPtGe$_3$ single crystal

Neeraj Kumar·Pranab Kumar Das·Ruta Kulkarni·A. Thamizhavel·S. K. Dhar·P. Bonville
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Abstract

The magnetic properties of single crystalline EuPtGe$_3$, crystallizing in the non-centrosymmetric BaNiSn$_3$-type crystal structure, have been studied by means of magnetisation, electrical resistivity, heat capacity and $^{151}$Eu Mössbauer spectroscopy. The susceptibility and heat capacity data indicate a magnetic transition at $T_{\rm N}$ = 11\,K. The Mössbauer data confirm this conclusion, but evidence a slight first order character of the transition. Analysing the magnetisation data using a mean field model with two antiferromagnetically coupled sublattices allows to explain some aspects of the magnetic behaviour, and to derive the first and second neighbour exchange integrals in EuPtGe$_3$.

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Neeraj Kumar, Pranab Kumar Das, Ruta Kulkarni, A. Thamizhavel, S. K. Dhar, P. Bonville. 2011-11-02. Antiferromagnetic ordering in EuPtGe$_3$ single crystal. https://doi.org/10.1088/0953-8984%2F24%2F3%2F036005

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