MAGNETIC FLUCTUATIONS IN ZN AND NI DOPED YBA2CU3O6+X

The magnetic neutron scattering cross-sections in Zn and Ni doped YBCO 6+x have been measured for energies between 2 and 14 meV and temperatu res between 10 and 270 K. The imaginary part of the generalized suscep tibility, integrated around (pi, pi) position, deduced from these data exhibits the simple temperature scaling form found in the normal stat e of weakly doped LSCO and pure YBCO6.5 with different weights of line ar and cubic terms of E/T.