MAGNETIC-PROPERTIES OF RTIGE COMPOUNDS

Magnetic properties of RTiGe (R = Gd, Tb, Dy, Ho, Er, Tm, Y) compounds with CeFeSi-type structure have been studied by magnetization measure ments in the temperature range 77-700 K in static magnetic fields up t o 13 kOe. For TbTiGe, DyTiGe and HoTiGe the measurements have been car ried on single-crystal samples. The coexistence of strong ferro-and an tiferromagnetic interactions was found in RTiGe rare-earth compounds w ith low concentration of 3d electrons. The concentration dependencies of magnetic ordering temperatures, effective magnetic moments and para magnetic Curie temperatures of these compounds have been determined. G dTiGe and TbTiGe orders at rather high temperatures, T-N = 412 and 288 K correspondingly, while ErTiGe and TmTiGe remain Curie-Weiss paramag nets down to 77 K. YTiGe is Pauli paramagnetic. The results are compar ed with those obtained on pure rare-earth elements and isotypic RTX co mpounds. (C) 1998 Elsevier Science B.V. All rights reserved.