Electrical Resistivity of Europium and Ytterbium

Abstract

Electrical resistivity measurements on europium and ytterbium metals from 1.3\ifmmode^\circ\else\textdegree\fi{} to 300\ifmmode^\circ\else\textdegree\fi{}K are reported. Europium exhibits a sharp peak in its resistivity at 90\ifmmode^\circ\else\textdegree\fi{}K which must correspond to its magnetic ordering temperature. The shape of the peak indicates antiferromagnetic ordering below 90\ifmmode^\circ\else\textdegree\fi{}K. Ytterbium has no sharp anomalies in its resistivity.