Matas, S.; Mihalik, M.; Klemke, B.; Sokolowski, A.: Low Temperature Properties of Selected Kramers Rare Earth Oxychlorides. EPJ Web of Conferences 40 (2013), p. 11005/1-4
10.1051/epjconf/20134011005
Open Access Version
Abstract:
In this work, we present low temperature magnetic and electronic properties measured on selected Kramers rare-earth oxychlorides REOCl, RE= Nd, Gd, Dy which adopt the PbFCl-type of structure. Prepared powder samples were characterized by means of standard structural, magnetic and electronic methods as X-ray diffraction (300 K), heat capacity (0.3 K - 12 K) and susceptibility measurements (2 K - 300 K, at ambient pressure and hydrostatic pressures up to 0.68 0.01 GPa). Our results indicate new transition to the ordered magnetic state for GdOCl and NdOCl compound at temperatures of 5 K and 1.5 K, respectively. We found small increase of magnetization saturation value of dysprosium oxychloride with an applied hydrostatic pressure, but no remarkable changes occur to antiferromagnetic transition temperature (TN 9.2 K) when a moderate hydrostatic pressure (p 0.68 0.01 GPa) was applied. Observed deviations from the CurieWeiss behavior below 26 K can be caused by the vicinity of the magnetic ordering temperature, or another magnetic effects. The single crystal experiments which will solve this opened question are in progress.