Magnetic properties of RNi/sub 2/B/sub 2/C (R=Pr, Sm, Dy and Tb)

We report here the results of magnetization and heat capacity measurements on RNi/sub 2/B/sub 2/C (R=Pr, Sm, Dy and Tb). Sm, Dy and Th compounds order magnetically at /spl ap/10 K, 11 K and 18 K respectively. Dy and Tb compounds show field induced magnetic transitions. In the new compound, PrNi/sub 2/B/sub 2/C, magnetic susceptibility measured under zero field cooled and field cooled conditions show a significant difference.