MAGNETIC-PROPERTIES OF RARE-EARTH COMPOUNDS OF THE TYPE RCO(11)TI

We have investigated the magnetic properties of rare earth compounds o f the type RCo(11)Ti (R = Sm, Gd, Tb, Dy, Ho, Er, Tm and Y) by means o f high-field and ac susceptibility measurements. From the experimental values of the saturation magnetisation at 4.2 K we have derived the m agnitude of the Co moments in these compounds, which were found to be almost invariant across the series (mu(Co) = 1.41 mu(B)) We have deter mined the easy magnetisation direction in the various RCo(11)Ti compou nds and found that the Co sublattice anisotropy favours an easy moment direction along the c-axis, whereas the rare earth sublattice anisotr opy is governed by a positive second-order crystal field parameter (A( 2)(0)>0). Spin reorientation phenomena were observed for compounds wit h R = Dy, Er and Tm.