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\begin{document}
\title{Magnetic and thermodynamic properties of Ce$_4$RuAl compound}
\author{J.C.~Debnath}
\affiliation{Physics Department, University of Johannesburg, South Africa}
\author{A.M.~Strydom}
\affiliation{Physics Department, University of Johannesburg, South Africa}
\author{F.~Tappe}
\affiliation{Institut für Anorganische und Analytische Chemie, Universität Münster, Germany}
\author{R.~Pöttgen}
\affiliation{Institut für Anorganische und Analytische Chemie, Universität Münster, Germany}
\author{\underline{B.M.~Sondezi}}
\affiliation{Physics Department, University of Johannesburg, South Africa}
\begin{abstract}
The results of magnetic susceptibility and heat capacity measurements are reported for the Ce$_{4}$RuAl compound above room temperature to low temperature range (400 K to 0.46 K) and in magnetic fields up to 7 T. The magnetic susceptibility $\chi$(T) exhibits a distinct anomaly at 0.95 K which most probably suggests a paramagnetic to antiferromagnetic phase transition. Magnetic susceptibility obeys the Curie Weiss law and revealed an effective magnetic moment $\mu_{eff} = 2.18$ $\mu_{B}$/Ce which is close to the value for free Ce$^{3+}$ ($\mu_{eff} = 2.54$ $\mu_{B}$). The paramagnetic Weiss temperature indicates net antiferromagnetic correlations. In the specific heat a peak at 1.3 K supports the bulk nature of the phase transition observed in $\chi$(T). The Sommerfield coefficient is moderately enhanced in the paramagnetic phase, and suggests f-c correlations among the electrons prior to magnetic ordering.

\end{abstract}
\maketitle

\end{document}
