Antiferromagnetic ordering in EuPtGe$_3$ single crystal

Details Antiferromagnetic ordering in EuPtGe$_3$ single crystal Antiferromagnetic ordering in EuPtGe$_3$ single crystal

2010-11-22

arxiv.org/abs/1011.4876v2

J. Phys.: Condens. Matter 24 (2012) 036005

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 7 figures

Scientific paper

10.1088/0953-8984/24/3/036005

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 M\"ossbauer spectroscopy. The susceptibility and heat capacity data indicate a magnetic transition at $T_{\rm N}$ = 11\,K. The M\"ossbauer 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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